Banner 3D colorido em estilo cartoon com personagens infantis brincalhões

A wide, colorful, joyful banner for a kids nursery rhyme YouTube channel called "LumaRhymes". The scene features the main cute AI-animated character (same as profile photo) in the center, surrounded by magical floating letters, numbers, colorful musical notes, playful animals, and soft rainbow clouds. Bright, cheerful, pastel colors, very happy and safe atmosphere, 3D animated style similar to Cocomelon and Pixar. Soft lighting, gentle shadows, smooth textures, ultra-high quality, wide horizontal format, fun and emotional, child-friendly, designed for toddlers 1–5 years. Center space reserved for character and clear view; no text in the image; suitable for YouTube channel banner.