Decorate mini cupcakes. Prepare buttercream icing following recipe directions. Tint portions green and red. Use tip 102, a cut disposable decorating bag and green icing to pipe a ruffle around the outer edge of the cupcake.
Use tip 102, a cut disposable decorating bag and red icing to pipe two ruffles around the inner portion of the cupcake.
Position icing decoration, supporting with icing if needed.