Playful flat-vector poster illustration of [HUMAN] posing with [ANIMAL] in [POSE], wearing [CLOTHING], set in [SCENERY]. Use clean thick black outlines, simple rounded geometric shapes, flat solid color fills, minimal facial details, small neutral eyes, calm deadpan expression, simplified hands and body proportions, pastel color blocking, sparse confetti doodles, tiny abstract icons, clean negative space, crisp graphic poster layout, and a controlled [PALETTE]. Vertical 4:5 composition.