I found some really cute patriotic medallions in my search for Independence Day decorations.
It immediately got me to wondering if I could replicate them in cookie form. (That seems to be very common in my CRAZIE brain!)
 

Simple simple simple.......
 

Outline and flood a round cookie with red, white and blue glaze. These can all be done at the same time. You'll be creating a bull's eye effect by piping the outer edge with blue glaze, the middle with white glaze, and the inside circle with red glaze. (see photo below)

Once the flooded cookie has dried for about 1 - 1-1/2 hours, use a cake tester to make diameter lines all the way around it.

In the cookies shown above, I ended up marking them with additional diameter lines to create a more complete look.