Luxury Blazer Birthday Prompt for Boys

Create a photorealistic full-body portrait of the same boy from the reference photo, standing confidently beside a luxury birthday setup with a black and gold cake, gold balloons and gift boxes in an elegant hotel room. He wears a black tailored blazer, white shirt, dark trousers and polished shoes, standing still in a grounded pose with both feet planted on the floor, both hands fully visible with five natural fingers each, one hand in pocket and other resting naturally. Render strict correct anatomy with exactly two arms, two hands, two legs and two feet, natural joints and realistic proportions, no motion blur on the body. Behind him show blurred curtains, warm lamps and bokeh lights. Light his face with soft key light plus gentle fill. Frame head to toe with margin above head and below feet. Shot on Sony Alpha A7 III with 85mm f/1.8 lens, sharp focus on eyes, natural skin texture, crisp suit fabric. Finish with rich contrast and subtle film grain. Keep face same as reference, not CGI, not illustration. Strictly avoid extra fingers, deformed hands or feet, extra limbs and plastic skin.