Japanese Ad Poster Grid — Skincare, Travel, Food & Tech

Generate a professional 2x2 grid of Japanese advertisement posters featuring distinct themes with customizable headlines and authentic branding. Use it as a Concept Art starting point for GPT Image 2: keep the visual structure and style constraints intact, then swap in your own subject, brand, or scene.

This prompt is organized as structured JSON with fields such as type, layout, and panels. Keeping that hierarchy helps the model separate the subject, layout, interface elements, and detail constraints.

Start with small changes to subject, scene, camera, and color, then generate a few variations to compare composition and detail without turning the page copy into keyword stuffing.