Using a serrated knife, cut plastic dowel rod into 3 1/2 in. and 2 1/2 in. lengths. Insert 2 1/2 in. piece into center of chest area, angled up, with about 1 1/4 in. sticking out of cake. Insert the 3 1/2 in. piece into the head area, angled down, with the end resting on the smaller length.