A robot is delivering mail in a suburban neighborhood, waving and smiling at a guy who just stepped out of his house. The guy looks puzzled / confused.
hand-drawn illustration (playful), suitable for YouTube videos and the like.
thick black ink lines with a natural hand-drawn wobble and occasional unevenness.
flat white background, no shading, no color, no gradients.
characters have simplified but clear anatomy: limbs are defined, hands have 3–4 fingers with minimal detail (no realistic joints or fingernails).
proportions slightly stylized (not fully realistic).
facial expressions are relaxed, mildly exaggerated, and a bit humorous.
poses feel casual and natural, not stiff or posed.
allow small imperfections and asymmetry to add personality.
objects are structurally correct but loosely drawn with minimal detail.