A highly detailed 3D model of a scary Halloween pumpkin, carved with a menacing jagged grin and sharp triangular eyes. The pumpkin must be completely solid (not hollow inside) — ideal for 3D printing as a single solid mesh. The outer surface has realistic grooves, rough texture, and slightly decayed edges for a spooky, aged look. Add deep cracks, subtle scratches, and irregular dents to enhance its creepy character. The stem is thick, twisted, and gnarled, with a dried, cracked appearance. The style is dark, creepy, cinematic horror, focusing on detailed surface sculpting. Exclude any inner glow or hollow interior — keep the model watertight and printable. Render in high resolution with PBR-ready textures, suitable for 3D printing and close-up renders.