Decorate Santa. For glove, use tip 3 and full-strength black icing to outline and fill in. Pat smooth with finger dipped in cornstarch.
For face details, use tip 1 and full-strength black icing to pipe eyes. Use tip 1 and full-strength red icing to pipe mouth.
For hat, use tip 2 and full-strength white icing to pipe coat ruffle, cuff, beard, mustache and hatband; pipe dot pompom.