Peel a large apple, red or golden delicious seems to work well
Coat the apple with a mixture of 1/3 cup lemon juice and 1 tablespoon salt
Using a knife, carve eye sockets, nose, mouth and ears
Stick cloves in eye sockets and rice teeth (be creative, especially if this is a Halloween decoration)
Place the apple on a cooling rack in a warm, dry place for 2 weeks, shaping the face as it shrinks and harden.