At first glance I was distracted by a couple of things. The half leg on the left and the stool leg in the background in the upper right. A tighter crop would have been better here. Everything else seems okay. The focues on the horses leg is nice with the boots in the back being soft and out of focus. The color in the boots add a nice touch. Other than the few things I mentioned it's a nice shot.
Legs in the background are too much of a distraction and the other leg on the left should be all the way in or all the way out of the photo. Unnessary items clutter photos and draw attention away from your main subject. In addition, your horse isn't wearing horse shoes, shoes being something used to cover and protect feet. This is basically a photo of a horses "foot". sorry to get technically, but if the shoe doesn't fit......