The posture of the rider is confident and menacing. The action filled pose of the steed is befitting of its master, yet I would have to say that slight improvements would make it even more majestic.
The hooves look a tad small for such a powerfully muscled stallion. To have them more proportioned to that of a Clydesdale's (with thick tousled hair draping down to partially cover the upper half) would also relate better to that of the bulk of the warrior's gauntlet.
Despite those minor adjustments, I would still be proud to display this wonderful piece of art at my front entrance for all to relish in its splendor!
As always, this looks simply amazing. The details are stunning.
As for critique-- I'm not sure if you're finished with the lines on the side of the neck and the bottom of legs. At the moment, they look like cuts. If they're muscles, I think that they would look better smoothed out. If they're supposed to look like cracks in stone, it might be helpful to give them sharper edges and differ how the jet out amongst themselves. The hooves seem like they should have a little hair hanging down over them.