Whimsical Children's Book Illustration

Please generate an illustration with a theme/main subject, featuring the whimsical style of children's book illustrations: outlined with loose black ink sketches, not overly realistic in details; layered with soft watercolor washes and dots, clean, warm colors with a subtle texture of paper. The atmosphere of the image suits postcards, children's picture books, Christmas advertising events, or emotional editorial illustrations, conveying sincerity, healing, and a touch of nostalgia. Composition is simple with comfortable spacing, and the main character is clear and prominent. No photographic texture, 3D rendering, or overly sharp details. No watermarks or logos.