Demo de producto nativa para móvil con reacción honesta

Create a vertical 9:16 UGC-style creator video frame: a relatable content creator holding a product and speaking directly to camera in a natural, phone-shot setup, as if recording a testimonial or quick demo for a brand. The scene should feel authentic, spontaneous, and social-first, with soft natural window light, a lived-in home or desk background, casual clothing, slight imperfections, and a believable handheld perspective. Show the creator mid-explanation with an engaged expression, product clearly visible, and composition optimized for mobile viewing. Keep the look intentionally less polished than a studio commercial, but still clean and brand-ready. Negative constraints: no glossy advertising look, no over-staged posing, no heavy retouching, no cinematic lighting, no text overlays, no watermarks, no extra hands or distorted product shapes.