On this Memorial Day it seems appropriate to create some US flag cookies to commemorate those who have given all for our freedom. 
This tutorial was created with much gratitude to those who serve our country.
 

These cookies are relatively easy to execute in that it only requires white glaze to be flooded on the cookie before using dusts to paint on the details.
 

Outline and flood rectangle shaped cookies with white glaze. 

Allow the cookies to dry overnight before moving to the next step.
 

Prepare some red and blue "paints" by mixing Red Rose and Royal Blue dusts with small amounts of vodka (or clear extract, i.e. almond extract).
Using a paint brush, create the blue background in the upper left corner of the cookie, and then the red stripes over the rest of it. (see photo below)
Neatness is not required since this design is intended to be whimsical.

Allow the "paint" to dry for an hour or two.
Pipe some white dots over the blue background to represent stars. After they have dried for about 30 minutes, smash them down with a clean finger to give a more whimsical appearance.

Stars and Stripes Forever!