This is my absolute favorite project ever.  All i did was switch my face with Miley Cyrus'.  Sounds easy.  NOT.  Tjis was actually one of the hardest designs to do.  If you really want it to look like your face belongs there, then you have to really look and see if that face is in the proper place, you have the same skin tone, etc.  But it was still a lot of fun and i really enjoyed it.