Ingredients Tools assorted icing colors Decorator Preferred 9inch Angled Spatula Decorator Preferred 9inch Angled Spatula 12-Inch Disposable Decorating Bags, 24-Count - 12-Inch Disposable Piping Bags 12-Inch Disposable Decorating Bags, 24-Count - 12-Inch Disposable Piping Bags Standard Coupler Standard Coupler Decorating Tips Instructions Click to mark complete - Prepare two colors of buttercream ? one base and one accent color (prepare less of the accent color). Dip an Angled Spatula into the accent color and smear the icing upward inside the decorating bag. - Carefully fill the bag with the base color buttercream, making sure not to smear the accent color.