Decorate apple. Tint portions of icing light and dark burgundy, ivory, light and dark brown/red-red combination (for brown shades) and moss green. Use tip 2 and full- strength dark burgundy to outline cookie except stem. Use thinned dark burgundy icing in cut parchment bag to pipe a second outline about 1/8 in. wide. Immediately use thinned light burgundy to pipe dots on outline. Let dry 1 to 2 hours.
Use thinned ivory icing in cut parchment bag to flow in center. Use thinned light brown icing in cut bag to pipe in core. Use tip 2 and thinned dark brown icing to pipe oval seeds. Use tip 3 and full-strength green icing to pipe outline stem. Let dry overnight.