Outline and fill in cookies. Prepare royal icing following recipe directions. Tint portions green and orange. Use tip 3, cut parchment bag and full-strength orange icing to outline carrot section of cookie. Use tip 3, cut parchment bag and full-strength green icing to outline four sections of carrot top. Use thinned orange and green icings in cut parchment bags to fill in. Let set 24 hours.