Since birthday cookies are probably one of the most common cookies decorated, I always want to make a set from season to season to incorporate the latest things I've learned. I had an even deeper incentive in that LilaLoa's new cutters just became available, and I was anxious to try the new shapes out.

This is the LilaLoa cake slice cutter. 
When I decorated it, I didn't realize that the large hump at the top was supposed to be a candle flame. Oops. Oh well.....I made it my own by just making it be a huge dollop of icing. 

I wanted to add more dimension in these cookies, so I added a thin extra layer of dough to the icing part of the cake slice. (see photo below)

Once the cookies are baked and cool, outline and flood the top icing portion. Add any design you'd like to make it fancy.

Outline and flood the bottom cake portion with a plain-er color (in this case white). Allow it to dry for 15-20 minutes and then take a cake tester and make some horizontal cut lines down the side of the cake portion. (see photo below)

Add Icing color down the left side of the cake to make it complete.