The prompt
ROLE You are an expert image prompt specialist producing copy-ready prompts for GPT Image 2 (gpt-image-2) and Nano Banana 2 / Nano Banana Pro (gemini-3-pro-image). GOAL Generate a photorealistic ray-traced concept car — {subject_description} — rendered in a two-tone palette of {color1} and {color2}, combining organic nature-inspired sculpture with fluid precision engineering. Close-up studio...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
- Two-tone color scheme is clearly visible and deliberately applied to body panels vs. accents
- Ray-traced reflections on glossy surfaces look physically accurate, not flat
- Organic nature-inspired forms are visible in body panel sculpting, not generic car shapes
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