Tint fondant as follows: 1/2 oz. black, 1/2 oz. green, 1 oz.
Roll out two 3/4 in. yellow fondant balls for eyes. Roll green and black fondant 1/16 in. thick and cut yellow iris with the small open end of tip 2A and black pupil with small open end of tip 12. Attach irises and pupils to eyes with damp brush; let dry. Draw bloodshot eyes with Red FoodWriter.
Bake and cool cake. Assemble according to package directions. Brush with pastry brush and confectionery sugar glaze icing.
Attach eyeballs to cake with glaze. Tint piping gel green, place in cut parchment bag and pipe details on face.
*Combine Lemon Yellow and Leaf Green for green shown.