Attach head and body cookies with white royal icing and position on waxed paper-covered surface to dry. Use tip 4 and white royal icing to pipe arms (smooth with finger dipped in cornstarch). Pipe tip 3 hands with green royal icing. Pipe tip 4 feet with black royal icing.
Combine Leaf Green and Lemon Yellow icing colors for green shown. Combine Red-Red and Christmas Red icing colors for red shown. Roll out cookie dough and use candy corn and Frankenstein cutters to cut cookies. Bake and cool.