Realistisches Foto eines A4-Dokuments

Transform this document into an extremely realistic photo of a physical A4 sheet (21x29.7cm) printed on white paper. The sheet is being held by a person, showing only a small part of the hand and fingers gently holding one edge. Background is a real wall with natural ambient lighting, soft shadows, and realistic photographic perspective. The paper looks truly printed, with real A4 proportions. The result should look like a spontaneous photo taken with a cellphone, not a digital mockup or 3D render. Preserve all original content exactly — all text, numbers, logos, signatures, colors, margins, and details must remain intact and legible. Do not crop, distort, rewrite, or invent any information.