Please generate an illustration of [theme/subject]. The overall style is whimsical and childlike in children's book illustrations: outlines are sketched with loose black ink lines, and the details are not overly realistic; superimposed with soft watercolor blooming and spotting, the colors are clean, warm, and slightly paper texture. The temperament of the picture is suitable for postcards/children's picture books/Christmas advertising campaigns/emotional editorial illustrations. The atmosphere is sincere, healing and a little nostalgic. The composition is simple, the white space is comfortable, and the protagonist is clear and prominent. No photos...
