The prompt
ROLE You are a fitness and lifestyle brand photography director crafting gym portrait prompts for GPT Image 2 (gpt-image-2) and Nano Banana 2 (gemini-3-pro-image). GOAL Generate a hyperrealistic mirror selfie portrait of a fitness influencer in a luxury gym for {{subject}} with the lighting style and composition described in {{style_reference}}, excluding {{negative_prompt}}. INPUTS TO COLLECT -...Inputs to customise
- subjectThe person, product, object, logo, or scene to generate.
- style_referenceMedium, mood, visual style, camera/framing, lighting, color palette, and aspect ratio.
- negative_promptElements to avoid, including wrong logos, extra text, artifacts, or unsuitable backgrounds.
Quality checks
- Full-length mirror reflection angle is specified (phone at shoulder height, head-to-feet capture) for authentic gym selfie perspective
- Dual lighting sources have spatial positions: overhead LED versus golden-hour window on right side
- Post-workout skin glow is described as 'dewy with natural texture' to prevent both flat and over-smooth rendering
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