Amazing work done here. Very good rendering and modeling on your masterpiece. This would be one hell of a centaur character. Your work on the back viewpoint is very well defined and high quality to the point that it makes it more interesting when it will finally be seen moving. I bet this would look more terrific when animated in a clip to further emphasize it's well defined structure. The horns are also catchy to the eyes, it is very close to perfection when it comes to proportionality with respect to the body of the centaur.