After seeing Laura's post (she's the owner of A Dozen Eggs and makes perfect cookies) about using flood icing on top of dried flood icing, I thought I would try it for these.
I really liked the way it added some dimension to the cookies. I outlined and filled the face and the shirt and let that dry for about 2 hours. Then I outlined the hair, goatee and button onto the semi-dry flood icing. Then, the hair, etc. were filled in with flood icing.