Bake and cool skull cake and 1-layer chocolate sheet cake. Secure skull halves together with icing. Fill in mouth indentation with icing and ice smooth .

Make fondant features. Paint pupils with black icing color. Mix black icing color with lemon extract to create a dark gray; paint eyelids. Mix white with a touch of brown Color Dust to make ivory; mix with lemon extract; paint teeth. Mix white, brown, red Color Dust with lemon extract; paint lips. Pipe tip 16 dark gray stars around eyes.

Cover remainder of cake with tip 16 green stars.

For hair, cut licorice into 60 pieces, each 1 1/2 in. and 2 1/2 in. long, attach with icing.

For hands, roll two 6 in. fondant balls; flatten. Cut slits and shape to make 3 in. long fingers. Roll out reserved black fondant 1/8 in. thick. Use knife to cut 1/2 in. squares for fingernails. Cover hands with tip 16 green stars to match face.

With remaining black fondant make two eyebrows 2 1/4 in. long x 3/8 in. wide, tapering to 1/4 in. wide. At party: Crumble chocolate cake and mound around skull cake on board. Position hands.