AI Prompt for VTuber Debut Poster from Character Sheet with Anime Illustration Style

"Using the provided reference image as the character and design base, transform the clean Live2D model reference sheet into a polished VTuber debut announcement poster while keeping the same character design, hoodie, headphones, choker, star and constellation motifs, and overall purple-blue night palette. Change the composition from a full-body reference sheet to a dramatic upper-body key visual of the character seated at a streaming desk, one hand near the face, in a cozy nighttime bedroom-studio. Add a starry city-night window background, curtains, hanging star ornaments, glowing monitors, desk microphone, keyboard/controller, and a drink mug, with soft cinematic lighting and sparkly atmospheric effects. Preserve the branding of Yume Asta and make the layout feel like an X/Twitter thumbnail or promotional key visual. Add dense decorative typography and framed info panels in elegant Japanese idol/VTuber promo style: a large title with the Japanese name and romanized 'Yume Asta', a short poetic tagline, 4 boxed profile sections labeled 'Profile', 'Like', 'Keyword', and '配信スタイル', plus 1 smaller boxed hashtag/community section at the bottom left. Add a large glowing headline at the bottom center reading 'VTuber Debut' and 'Coming Soon', plus a ribbon-style banner beneath it with Japanese debut-stream text. Make it richly detailed, dreamy, luminous, and premium, like an official VTuber debut teaser poster."