Combine Leaf Green and Lemon Yellow for green shown. Roll out cookie dough and use maple leaf cutter to cut cookie. Trim stem from cookie; bake and cool.
Place cookie on cooling grid positioned over cookie sheet. Thin down green royal icing to pouring consistency and pour over cookie; let dry. Use tip 3 and black royal icing to pipe face (smooth with finger dipped in cornstarch). Use tip 2 and orange royal icing to pipe in facial features (smooth with finger dipped in cornstarch).