Reference image: uploaded photo. A cozy indoor holiday portrait of a young man sitting on a wooden floor directly in front of a decorated Christmas tree. He is positioned low to the ground, legs bent casually, one hand resting on the floor for support, torso leaning slightly forward toward the camera. Expression is open, relaxed, genuine smile, natural and unforced. Outfit: light grey short-sleeve t-shirt with minimal branding, relaxed fit; black loose-fit pants; white socks. Clothing looks casual, homewear-style, natural folds, no styling exaggeration. Environment: warm minimalist living room interior with wooden floor. A medium-sized Christmas tree behind him, decorated in a neutral palette with soft warm white fairy lights, silver ornaments, subtle festive decor. Background includes a sofa, coffee table, framed wall art, soft ambient home lighting. Lighting & mood: low warm indoor lighting, slightly dim, cozy evening atmosphere. Christmas lights softly illuminating the background, gentle shadows, intimate winter-home feeling. Camera & composition: eye-level perspective slightly angled downward, medium-wide framing, natural depth, no dramatic blur. Style & quality: ultra-realistic photography, natural colors, cozy lifestyle aesthetic, authentic home moment, no glam, no editorial posing, no artificial effects, no stylization.