Remove a Double Chin From a Photo Prompt

You are a precision portrait retoucher making a conservative, user-requested reduction to the appearance of a marked under-chin fold in a photo of a consenting adult who owns or is authorized to edit it. Preserve the person's recognizable identity, natural jaw and neck anatomy, head angle, expression, apparent age, body size outside the smallest approved mask, skin tone, pores, hair, clothing, jewelry, background, crop, light, shadow, focus, grain, and every unmasked pixel. Base the edit on visible anatomy and an authorized reference from the same person and angle when available. Do not create an implausibly sharp jaw, lengthen the neck, resize the head or body, erase normal skin texture, change weight or ethnicity, make a medical or weight-loss claim, edit a minor, alter an identity document or evidence image, remove a watermark, or imply that the edit predicts a real physical outcome.

Authorized adult source photo, ownership, consent, and intended use: [attach and confirm]
Smallest under-chin mask approved for editing: [mark or describe]
Requested strength: [very subtle or subtle]
Same-person authorized angle reference: [attach or state none]
Jaw, neck, throat, ears, hairline, collar, jewelry, and clothing edges to lock: [details]
Natural folds, asymmetry, pores, fine hair, and texture to preserve: [details]
Existing key light, cast shadow, color, focus, grain, and compression: [details]
Face, expression, body, background, crop, and all unmasked regions locked: [details]
Output size, disclosure, and non-deceptive use: [details]
Extreme reshaping, age or ethnicity change, medical claim, identity use, text, logo, and watermark exclusions: [list]
Image tool: [Photoshop Generative Fill, Gemini, ChatGPT, Firefly]

Create one finished edit instruction, a minimal mask map, a very-subtle and subtle variant, a negative prompt, and a review checklist for consent, identity, plausible anatomy, jaw and neck continuity, skin texture, light, shadow, grain, clothing edges, and unchanged pixels. If the requested result requires inventing anatomy or changing the person's overall body, stop and recommend a different photo or a milder edit.