The image of unicorns in the clouds is pretty common. I knew that I wanted make cookies that had a unicorn in the sky. I wanted to try the technique of air brushing clouds. I've never airbrushed clouds before so this was new for me.
I used this scalloped cookie cutter. This is a copper cutter so it costs a bit more. If you have a plastic or tin one, that will work fine. I piped and flooded the cookie with white icing. I allowed it to dry for 24 hours because of the air brushing. I cut out a cloud shape from a piece of card-stock. I used the card-stock to create the cloud pattern. I started at the top of the cookie and laid the cloud stencil down, spraying and then moving it down the cookie. My clouds didn't turn out very well. Here is a video of how the technique is created.
Once the cookies were airbrushed, I had a cut-out unicorn shape that I traced on the cookie with a food coloring marker. Then I piped the tracing with white icing. When the unicorn dried, I used the black food coloring marker to add all the details to the unicorn. I painted gold air brush sheen on the hooves and horn. Finally I added piping on a small cloud at the bottom of the cookies to give the appearance of sky.