卡通手绘风简约清新儿童男孩微笑竖起大拇指插画

illustration, cartoon style, minimalist, light blue, white, and brown color palette, single character, short hair, big eyes, smiling with teeth, thumbs up with right hand, left hand hanging naturally, light blue jacket, white inner shirt, light blue shorts, dark shoes, plain white background, simple and clean, positive and friendly vibe