Create a realistic, high-quality mockup of a black t-shirt. The scene is set in a photography studio with concrete walls, using bright, even lighting. The environment has a clean, minimalistic, and conceptual vibe. The model is an Afro-Brazilian man, standing front-facing with a neutral expression, showcasing the t-shirt clearly. The focus is on the t-shirt, with the fabric texture and fit being visible in detail. The overall aesthetic is modern and professional.