Bake cupcakes in Stars & Stripes or Patriotic Themed Standard Baking Cups and cool completely on Cooling Grid.
Prepare Buttercream Icing recipe. Tint 1/3 of icing with Royal Blue Icing Color. Tint another 1/3 icing with Christmas Red Icing Color.
For fireworks, pipe a ring of fringe around rim of cupcake with blue icing and Multi-Opening Decorating Tip 233. Using same tip, pipe a concentric circle with white icing. Finish by piping red icing fringe in the center and inserting a 4th of July Party Pick.