Prompt

Bold flat-color wall art poster of adult man reclining on back, left arm flexed with fist raised near shoulder and right hand resting across lower abdomen. Shirtless figure wears black Batman cowl covering head and neck with visible chest emblem. High-contrast color blocking defines medium-brown skin against blue-green woven fabric background. Vertical portrait close-up angled slightly to the right with clean vector lines emphasizing thick thighs., a single uninterrupted photograph only, no written words or typography anywhere in frame, no captions, no app UI, no social-media post layout, no screenshot borders