Design a 3D Halloween pumpkin head for Roblox with a jagged, carved face—triangular eyes, toothy grin. Make the texture look slightly rough but Roblox-styled. The head should be hollow, with a visible thickness on cut edges. Add animated, flickering flames rising from the top and inside the pumpkin, casting an orange glow. Flames should be semi-transparent, eerie, and low-poly for Roblox performance. Export in Roblox-compatible format, with layers/textures intact for in-game use.