I used the reduced sugar recipe for the macaron shells here. Both regular and reduced sugar recipes can be found here. You may refer to my Creative Baking: Macarons book for a systematic presentation of the basics and complex shaped macarons. You may refer to my video tutorials for macaron basics and piping of complex shapes on the blog too.
The templates for the unicorns can be found here.
Here's the video tutorial!
I hope you found it helpful!