lol, so the subject came up about how I would customize a My Little Pony if I had a white one to paint on, and I remembered this old experiment. Dug it out and scanned it just for the fun of it. It's not an MLP, and I don't remember how long ago it was drawn (ages and ages), but yeah...never leave green markers in my vicinity! XD
You said you didn't know how long ago this was drawn, so maybe my critique is out-of-date, but the body of the horse looks fairly one-dimensional. Not so much in key areas such as the neck and the back legs, but it really shows along the top of the back. The patterns are beautiful, though, and the hair is gorgeous!
Oy...this was drawn maybe ten years ago? ^__^;;; I am WELL aware that it is horrible, and not at all in any league with my current work. It was dug out and posted as a response to someone wondering how I might design a My Little Pony toy.