This deviation is neat, because the viewer ever wonders if they're looking at muscle or skin. But then, it starts to look like fire! The way that the mane flows down the horse's back has a neat effect of going to the horse's left side. I also have really enjoyed the hooves on this one, most artists never get that right. The only thing you could've done better, maybe, was have the tail a tiny bit longer. It just seems unnatural on such a big body. I think that you did a great job, and you got all of the horse's joints right, which is hard to do!!