This is really a beautiful image. I think the horse is popping out of the canvass a bit. I wouldn't change that. I think the contrast is great. The problem is that the horse is part of the scenery because his hooves are buried. If you made his opposing hooves above the snow line, as if he was in a steady trot, you would seperate him from the background and the scenery blending would vanish. What do you think of that idea?