A vintage-style postage stamp Crayon Shin

A vintage-style postage stamp with an illustration of [Crayon Shin‑chan mid‑jump, hands spread wide, exuding a mischievous grin], featuring a [bold, stylized lines and vibrant primary colors—crimson red, sunshine yellow, and forest green] and detailed design on a white background. The focus is sharp,   the lighting highlights [Shin‑chan’s outfit texture and the fluid motion of his pose]. The color palette is [main colors — 2 to 3]. The stamp is isolated on a [white] background.