AI Image Generation — Prompt Brief

How to use this brief

Each slot pairs a Nano Banana prompt (conversational) and a GPT-Image prompt (structured) that generate the photograph only. Headlines, badges and labels are added afterwards in Canva or Photoshop using the post-production overlay spec — AI text rendering is still unreliable, so we never bake copy into the render. Every prompt enforces a single purple colourway (fixing the purple→blue inconsistency the audit found) and ends with a no-text/no-logo/no-watermark negative. Targets are drawn from image-audit-en.html: Slots 7 and 8 are the P0 additions (comparison/what's-in-box closer and the firmness frame); Slot 2 is the re-cast keystone; Slot 3 merges the duplicate size frames.

Resolution: generate at 2000×2000 (use AI Studio at 2K for Nano Banana; gemini.google.com caps at 1024 and needs upscaling). Reference images: the current slot is shown for context, but per Nano Banana behaviour, run the prompts text-only (no attached reference) unless you specifically want a faithful re-render — attached references over-anchor on the old colour mix.

Slot-by-Slot Prompts

Slot 1 — Hero — compliant main image   Cluster: massage ball set (26k/mo)

Current Slot 1 (reference)

Production target: Two balls at ~85% frame fill, slight diagonal, contact micro-shadow, pure white, brand logo on smooth ball.

Nano Banana (conversational)

A clean Amazon main product photo of a two-piece massage ball set on a pure white seamless background (RGB 255,255,255). On the left, a smooth matte purple lacrosse-style massage ball with a small white "beenax" logo printed on it. On the right, a firm purple spiky massage ball with short rounded nubs. Arrange the two balls on a gentle diagonal so they fill about 85% of the square frame. Add a crisp, tight contact shadow directly beneath each ball where it meets the surface — no soft drop shadow. Bright, even, shadowless studio lighting, true purple colour, high detail on the spike texture. Photorealistic, sharp focus. No text, no logos except the small one on the ball, no watermarks, no props, no hands.

GPT-Image (structured)

SUBJECT: two-piece massage ball set — a smooth matte purple lacrosse ball (small white "beenax" logo) + a firm purple spiky ball with short rounded nubs SETTING: pure white seamless studio background, RGB 255,255,255 PLACEMENT: both balls on a slight diagonal, filling ~85% of a square frame ACTION: static product shot LIGHTING: bright even high-key studio, soft shadowless fill, crisp ambient-occlusion contact shadow under each ball only CAMERA: 100mm macro equivalent, f/8, straight-on slightly elevated PALETTE: single purple colourway, white background STYLE: premium Amazon hero, catalogue-clean NEGATIVE: no text, no logos (except the small one on the ball), no watermarks, no props, no hands, no coloured background ASPECT: 1:1 SIZE: 2000x2000

Post-production overlay spec (added in Canva/Photoshop — AI renders the photo, humans add the text)

• A (recommended): (none — main image carries no overlay text)

Badge / chips: Main image is compliant with NO added overlay (Amazon main-image rule). Only the on-product brand logo is allowed.
Filename: ai-image-slot1-nano.jpg
Alt text: "Purple smooth lacrosse and spiky massage ball set on white background"  ·  Var: "Two-ball massage set, smooth and spiky, Amazon hero on white"

Slot 2 — Keystone — Two Balls, Two Jobs   Cluster: lacrosse (12k) + spiky (9.8k)

Current Slot 2 (reference)

Production target: Hands holding both balls; clean editorial frame for a 'smooth=deep tissue / spiky=feet' headline added in post.

Nano Banana (conversational)

A bright, premium lifestyle product photo: two open hands, palms up, each holding one purple massage ball — the left palm holds a smooth matte purple lacrosse ball, the right palm holds a firm purple spiky ball. Soft, clean light-grey studio background with generous empty space at the top for a headline to be added later. Natural realistic hands, neutral skin tone, no jewellery, no nail polish. Soft directional daylight from the left, gentle shadows. Sharp focus on both balls, true purple colour, visible spike texture. Photorealistic. No text, no logos, no watermarks.

GPT-Image (structured)

SUBJECT: two open hands palms-up, left holding a smooth purple lacrosse ball, right holding a firm purple spiky ball SETTING: soft light-grey studio, large clean negative space across the top third for post-production headline PLACEMENT: hands in lower two-thirds, balls clearly separated ACTION: presenting both balls to camera LIGHTING: soft directional daylight from left, 5200K, gentle shadow CAMERA: 85mm, f/3.5, slight top-down PALETTE: single purple colourway, neutral grey background, natural skin STYLE: clean editorial, Muji-calm NEGATIVE: no text, no logos, no watermarks, no jewellery, no nail polish ASPECT: 1:1 SIZE: 2000x2000

Post-production overlay spec (added in Canva/Photoshop — AI renders the photo, humans add the text)

• A (recommended): Two Balls, Two Jobs
• B: Smooth for Knots. Spiky for Feet.
• C: One Set. Two Tools.

Badge / chips: Optional factual chip: "Hard PVC + high-density rubber". Small "Standard 6.3 / 7.5 cm" size reference. NO badges/ratings/price.
Filename: ai-image-slot2-nano.jpg
Alt text: "Hands holding a smooth and a spiky purple massage ball"  ·  Var: "Two-ball massage set presented in open hands for deep tissue and feet"

Slot 3 — Merged size grid   Cluster: lacrosse + spiky · sizing objection

Current Slot 3 (reference)

Production target: Single clean grid: both balls in Standard and Large — replaces the two duplicate size frames.

Nano Banana (conversational)

A clean studio product photo arranged as a simple 2x2 grid on a soft white background, with clear empty gutters for labels to be added in post. Top row: a smooth matte purple lacrosse ball shown at two sizes (smaller "Standard" and larger "Large"). Bottom row: a firm purple spiky ball shown at two sizes (smaller and larger). All four balls true purple, consistent lighting, soft contact shadows, accurate relative scale between the small and large versions. Photorealistic, bright, even light. No text, no logos, no watermarks.

GPT-Image (structured)

SUBJECT: 2x2 grid — top row smooth purple lacrosse ball in two sizes, bottom row purple spiky ball in two sizes, accurate relative scale SETTING: soft white studio background, clean gutters for post-production labels PLACEMENT: even 2x2 grid centred ACTION: static comparison layout LIGHTING: bright even high-key, soft contact shadows CAMERA: 100mm, f/8, straight-on PALETTE: single purple colourway on white STYLE: catalogue size-chart clarity NEGATIVE: no text, no logos, no watermarks ASPECT: 1:1 SIZE: 2000x2000

Post-production overlay spec (added in Canva/Photoshop — AI renders the photo, humans add the text)

• A (recommended): Choose Your Size
• B: Two Balls, Two Sizes
• C: Standard or Large

Badge / chips: Post labels (factual): "Lacrosse Standard 6.3 cm / Large 8 cm" and "Spiky Standard 7.5 cm / Large 9 cm". Title Case, no caps.
Filename: ai-image-slot3-nano.jpg
Alt text: "Size grid of smooth and spiky massage balls in standard and large"  ·  Var: "Massage ball set size comparison, lacrosse and spiky, two sizes"

Slot 4 — Use-case triptych   Cluster: plantar fasciitis / foot · trigger point

Current Slot 4 (reference)

Production target: 3-panel in-use (back / plantar-fascia foot / neck), single purple colourway, documentary tone.

Nano Banana (conversational)

A clean three-panel composition (triptych), equal vertical thirds, each panel a real-life documentary lifestyle photo using the SAME purple massage balls. Panel 1 (left): a person lying on a yoga mat using the smooth purple lacrosse ball under their upper back. Panel 2 (middle): a seated person rolling the purple spiky ball under the arch of a bare foot. Panel 3 (right): a person pressing the smooth purple ball against the side of their neck. Natural light, calm modern home, athletic wear, documentary not posed, leave a clean band at the bottom of each panel for a short caption in post. Photorealistic. No text, no logos, no watermarks.

GPT-Image (structured)

SUBJECT: triptych of three real in-use scenes with the same purple massage balls — back, bare foot arch (plantar fascia), side of neck SETTING: calm modern home, yoga mat, natural daylight PLACEMENT: three equal vertical panels, clean caption band at the bottom of each ACTION: panel1 ball under upper back; panel2 spiky ball under bare foot arch; panel3 smooth ball on neck LIGHTING: soft natural daylight, 5400K CAMERA: 50mm, f/3.5, documentary PALETTE: single purple colourway, muted home tones, athletic wear STYLE: documentary lifestyle, NOT posed stock NEGATIVE: no text, no logos, no watermarks ASPECT: 1:1 SIZE: 2000x2000

Post-production overlay spec (added in Canva/Photoshop — AI renders the photo, humans add the text)

• A (recommended): Roll Out Tension, Head to Toe
• B: Back. Feet. Neck.
• C: Relief Where You Need It

Badge / chips: Per-panel caption (post): "Back & glutes" / "Plantar fascia & foot" / "Neck & shoulders". Factual, no medical cure claims.
Filename: ai-image-slot4-nano.jpg
Alt text: "Massage ball used on back, foot arch and neck in three scenes"  ·  Var: "Three real use cases for the massage ball set across the body"

Slot 5 — Body-map breadth   Cluster: cross-body use-case

Current Slot 5 (reference)

Production target: Single figure with target zones marked; communicates breadth (neck/shoulders/back/glutes/calves/feet/hands).

Nano Banana (conversational)

A clean wellness body-map composition: one person seated on a yoga mat in a calm bright studio, with the SAME purple massage balls placed near their body. Around the figure, leave clear empty space and small clean marker dots at the key zones — neck, shoulders, upper back, lower back, glutes, hamstrings, calves, feet, hands — so labels and connector lines can be added in post. Soft natural light, single purple colourway, athletic wear, photorealistic. No text, no logos, no watermarks.

GPT-Image (structured)

SUBJECT: one seated figure on a yoga mat with purple massage balls nearby, clean marker dots at neck/shoulders/back/glutes/hamstrings/calves/feet/hands SETTING: calm bright studio, light wall, generous negative space for post labels PLACEMENT: figure centred, empty margins for callout lines ACTION: relaxed seated pose, one ball in hand LIGHTING: soft even daylight, 5500K CAMERA: 35mm, f/4, environmental PALETTE: single purple colourway, light neutral set STYLE: clean wellness infographic base NEGATIVE: no text, no logos, no watermarks ASPECT: 1:1 SIZE: 2000x2000

Post-production overlay spec (added in Canva/Photoshop — AI renders the photo, humans add the text)

• A (recommended): Roll It Anywhere You Have Tension
• B: One Set, Whole Body
• C: Target Areas Others Can't Reach

Badge / chips: Post: navy connector lines + zone labels (neck, shoulders, back, glutes, calves, feet, hands). No ratings/badges.
Filename: ai-image-slot5-nano.jpg
Alt text: "Body map showing massage ball target zones across the whole body"  ·  Var: "Whole-body tension-relief map for the massage ball set"

Slot 6 — Lifestyle benefit   Cluster: aspiration / proof-of-outcome

Current Slot 6 (reference)

Production target: Aspirational single-person lifestyle, SAME purple colourway (fixes the purple->blue inconsistency).

Nano Banana (conversational)

A warm aspirational lifestyle photo: a relaxed person at home after exercise, calmly using the purple spiky massage ball on a shoulder or calf, looking relieved and comfortable. Bright airy living space, plants, soft late-afternoon light. Athletic loungewear. The massage ball is the SAME purple as the rest of the set (not blue). Documentary, candid, genuine expression. Leave clean space top-left for a short headline in post. Photorealistic. No text, no logos, no watermarks.

GPT-Image (structured)

SUBJECT: relaxed person post-exercise using the purple spiky massage ball on shoulder/calf, relieved expression SETTING: bright airy home, plants, late-afternoon light PLACEMENT: subject right, clean negative space top-left for headline ACTION: self-massage, calm and candid LIGHTING: warm soft 4300K window light CAMERA: 50mm, f/2.8, lifestyle PALETTE: SINGLE purple colourway (not blue), warm home neutrals STYLE: candid documentary lifestyle NEGATIVE: no text, no logos, no watermarks, NOT blue ASPECT: 1:1 SIZE: 2000x2000

Post-production overlay spec (added in Canva/Photoshop — AI renders the photo, humans add the text)

• A (recommended): Recovery That Fits Your Day
• B: Ease Soreness Anywhere
• C: Unwind Tight Muscles

Badge / chips: Optional factual chip: "Pocket-sized 220 g". No ratings/price/shipping. Match colourway to hero.
Filename: ai-image-slot6-nano.jpg
Alt text: "Person relaxing at home using a purple spiky massage ball"  ·  Var: "Aspirational recovery lifestyle with the purple massage ball set"

Slot 7 — Closer — comparison + what's in the box   Cluster: generic / defensive (P0)

Current Slot 7 (reference)

Production target: Square comparison vs foam roller / tennis ball (generic silhouettes) + box contents strip.

Nano Banana (conversational)

A clean square infographic base on a soft white background, split into two clear zones with empty space for post-production labels. Left zone: three simple product silhouettes side by side for comparison — the purple two-ball set, a plain neutral foam roller, and a plain smooth pale tennis-style ball (generic, NO brand markings, NO logos, NO stitching detail). Right/bottom zone: a flat-lay of the box contents — one smooth purple lacrosse ball, one purple spiky ball, and a small folded paper manual, neatly arranged. Bright even studio light, soft contact shadows, photorealistic. No text, no logos, no watermarks.

GPT-Image (structured)

SUBJECT: comparison row — purple two-ball set vs a plain neutral foam roller vs a plain pale tennis-style ball (generic, no branding); plus a flat-lay of box contents (lacrosse ball, spiky ball, folded manual) SETTING: soft white studio, clean zones for post labels PLACEMENT: comparison row top, contents flat-lay bottom ACTION: static layout LIGHTING: bright even high-key, soft contact shadows CAMERA: 50mm, f/8, top-down PALETTE: single purple colourway vs neutral greys STYLE: clean comparison + contents chart base NEGATIVE: no text, no logos, no watermarks, NO competitor branding, no stitching on the plain ball ASPECT: 1:1 SIZE: 2000x2000

Post-production overlay spec (added in Canva/Photoshop — AI renders the photo, humans add the text)

• A (recommended): Reaches What Others Miss
• B: More Than a Foam Roller
• C: Everything in the Box

Badge / chips: Post: comparison ticks (pinpoint deep tissue / holds firmness / targets foot arch) — generic labels "Foam roller", "Tennis ball", never brand names. Contents: "1 Lacrosse Ball · 1 Spiky Ball · 1 Manual".
Filename: ai-image-slot7-nano.jpg
Alt text: "Massage ball set compared to foam roller and tennis ball plus box contents"  ·  Var: "Comparison and what's-in-the-box for the massage ball set"

Brand Style Guide

• Colourway: ONE purple across the entire stack (match the gallery hero). Never mix in the blue variant.
• Product truth: smooth matte lacrosse ball + firm short-nub spiky ball; hard PVC + high-density rubber; 220 g. Don't render exaggerated long spikes.
• Overlay type: bold sans (Montserrat/Arial), Title Case, navy #1F4E78 headings on white or white-on-navy bars. No ALL-CAPS runs.
• Brand mark: small "beenax" wordmark, quiet, bottom corner of editorial frames only (never on the main image except on the product itself).
• Lighting/tone: bright high-key for product frames; soft documentary daylight for lifestyle (NOT posed stock).
• Compliance baked in: no ratings, review counts, prices, shipping, "best seller/#1" badges, or competitor brands/products in any render or overlay.

QC Checklist

• Every slot has paired Nano Banana + GPT-Image prompts.
• Every prompt ends with "no text, no logos, no watermarks".
• Aspect 1:1, size 2000×2000 specified on every prompt.
• Single purple colourway enforced on every render (fixes purple→blue).
• Overlay specs give 3 ranked headlines (A recommended) + factual badge + filename + 2 alt-text variations.
• Main image (Slot 1) carries NO overlay beyond the on-product logo.
• Comparison (Slot 7) uses generic "foam roller / tennis ball" — no competitor brands, no stitching on the plain ball.
• No ratings, price, shipping, or promotional badges in any overlay spec (G200390640).
• No medical cure/treat claims — "relief", "ease tension" only.
• Filenames lowercase, hyphenated, ai-image-slotN-nano.jpg; renders save into Images/.

Iteration tip: if the spike texture renders too long/sharp, add "short rounded rubber nubs, not long spikes"; if a lifestyle frame looks like stock, add "candid documentary, imperfect, natural expression, NOT posed".