Made a quick edit. I felt the body of the horse was a bit long for that perspective. Also the legs looked a bit weird, and the hind ones were missing joints. The neck also got very thing towards the head. I made the shading simpler, because you had a bit much shades going on and they distracted from the horse's actual shapes and muscles. There might still be something wrong with the perspective from myedit, but I'm not so good with that stuff.
Hope I helped!