Trim stem off cake. Ice sides and lightly ice top smooth. Trace face pattern with toothpick. Position stacked cookies above head. Pipe tip 1A large balls for eyeballs; add tip 4 dot pupils. Outline mouth with tip 4. Pipe in tip 4 tooth (smooth with finger dipped in cornstarch). Build up nose area with tip 1A
. Cover face with tip 18 stars; overpipe cheeks and eyelids with tip 18 stars. Pipe tip 4 dot warts. Cover hat top and sides, band and buckle with tip 18 stars. Add tip 18 pull-out star wavy hair. Pipe tip 18 star bottom border.