A creative and modern "Manus version" of a 'Happy First Day of School' t-shirt design. Style: Vibrant 3D puffy sticker aesthetic with a playful, contemporary feel. Subject: The text 'Happy First Day of School' arranged in a dynamic, layered composition. 'Happy' in a sleek, neon-lit script. 'FIRST' in chunky, 3D bubble letters with holographic textures and vibrant gradients (teal, magenta, and gold). 'Day of' in a clean, modern sans-serif. 'SCHOOL' in bold, blocky 3D letters with a subtle 'pixel art' pattern. Composition: Elements are floating dynamically, surrounded by stylized 3D school icons: a floating digital tablet, a rocket-shaped pencil, a crystalline apple, and glowing geometric stars. Style: High-gloss finish, soft studio lighting, vibrant and saturated color palette. Isolated on a clean white background, print-ready with proper margins and no cut-off elements. | PODspy AI Design