Decorate face. Use pattern and toothpick to mark face on cake top. Use tip 5 and white icing to pipe in eyes. Pat smooth with finger dipped in cornstarch. Use tip 5 and brown icing to pipe in irises and inner ears. Pat smooth. Use tip 5 and black icing to pipe dot pupils and nose and pipe in mouth. Pat smooth.
Use tip 5 and red icing to pipe bead tongue. Pat smooth. Use tip 3 and black icing to outline eyelids and mouth. Use tip 3 and white icing to pipe dot eye highlight.