's OC, Nimble Sprint. This is easily the most complicated pony you'll ever make, which is why I've linked to not only the finished model but also the how-to, which focuses on the crazy hair.
Kna's the one who started this whole pony papercraft thing, and this (not so simple) model is something I made to put a little bit of her in the collection of every one of her fans - including me Download for Full Size
Model Lying Down: [link]
Finished Photo: [link]
Finished Photos by Kna herself: [link] [link]
MLP:FiM (C)HASBRO, Faust