In advance: Make cookies. Prepare and roll out dough. Cut heads using bell cutter; cut off clapper. Bake and cool cookies.
Outline cookies with tip 3 and full-strength color flow;
flow in with thinned color flow in cut bag. Let dry overnight.
Tape antlers and ears patterns to cake board; cover with waxed paper. Position cookies. Using full-strength color flow and tip 5, pipe antlers and ears against cookie; let dry. Pipe in inside ears with tip 3. Pipe tip 5 dot hair and nose, tip 2 dot eyes and outline mouth. Outline accent on nose with tip 1. Let dry. Carefully remove waxed paper and overpipe antlers and ears on back side; let dry.