A highly detailed dark fantasy sculpture concept of a charismatic witch queen sitting on a throne made of skulls and bones. The woman has a powerful and calm presence, with a slightly lowered gaze and a subtle, confident expression. Her face is realistic, sharp features, high cheekbones, deep-set eyes, slightly parted lips. Long dark hair flowing naturally with subtle movement. She sits firmly on the throne with a straight but relaxed posture, shoulders open, conveying authority and dominance without effort. Her hands rest heavily on the armrests, long elegant fingers slightly curved, one hand gripping a skull. Her body anatomy is realistic and well-defined, visible collarbones, natural torso structure, grounded pelvis. She wears a dark, flowing robe that drapes naturally over her body like heavy fabric, with fine folds and realistic cloth physics. The throne is massive and organically built from intertwined bones and skulls, asymmetrical, chaotic yet structurally believable. Some skulls are cracked, broken, fused together. Bones form sharp, gothic shapes and support pillars. Lighting is dramatic and cinematic, strong contrast, chiaroscuro, soft shadows, subtle rim light highlighting the silhouette. Dark atmosphere, moody, mysterious. Material detail is extremely high, bone texture, cracks, roughness, skin pores, fabric texture. Style, ultra-realistic, dark fantasy, gothic, highly detailed, sculpture concept art, 8k, sharp focus, volumetric lightin