Create a portrait tattoo design sheet for a realistic black-and-grey forearm sleeve. Subject: a highly detailed raven skull nested with realistic peonies, smoke ribbons, tiny moths, and cracked marble fragments. Present it as premium tattoo flash on warm off-white paper with a faint arm-placement silhouette behind the main artwork. Style: ultra-realistic tattoo shading, smooth dotwork gradients, crisp stencil-ready outlines, high contrast but not muddy, strong negative-space gaps for skin breathing room. Include small layout notes in clean text: "BLACK & GREY" / "FOREARM SLEEVE" / "NEGATIVE SPACE". No gore, no body horror, no brand logos, no actual person, no photorealistic skin photo; make it a professional tattoo design presentation.
