Pipe frosting over cupcake in a circular direction working from the center of the cupcake towards the outside and back to the center. Smooth the icing with an offset spatula (or your finger) to create the feathered look.
Attach each flamingo head to a toothpick using clear tape. Press into the cupcake. Alternatively, if you plan to serve immediately AND printed on card stock, you can press the flamingo head directly into the cupcake.