Complex sentence: Later that night, back in the pumpkin patch, the witch buries Harley's now-disfigured corpse in Pumpkinhead's grave, still wearing the necklace his son Billy made him.
Split into simpler sentences: Later that night, back in the pumpkin patch, the witch buries Harley's now-disfigured corpse in Pumpkinhead's grave. The film ends showing his corpse still wearing the necklace his son Billy made him.