This is so awesome XD And here I thought that all unicorns were filled with nothing but sunshine, cakes and rainbows! I was so wrong. You should do a sculpt like that too XD -The "imaginary" unicorn vs. the "real" unicorn!
Awesome idea, but I wish you had done one of the older generation ponies, because the new generation looks like creepy, deformed aliens. (Of course, showing the skull of one of these makes them even MORE creepy, which I wouldn't have thought possible until now!)