Anime VTuber Starry Night Live Stream Overlay Prompt

Create a magical anime VTuber live stream overlay featuring a customizable star idol, cozy starry night setting, and interactive chat panels. Use it as a Konzeptkunst 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, theme, subject, environment, props, layout, and style. 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.