Very trick! Nice! I especially like the top swordsman, falling man, and trumpeter! As noted, the horse of the fallin man seems overly long and curved. Presuming he still had his reins, the horse's head would be jerked to the side with the arm cocked back farthest. Otherwise, I would think up and at an angle would be more realistic and dramatic? But very crackerjack, and I look forward to seeing progress!
Oh, and I like the fact that the men are not seating perfectly in their saddles... In full gallop I would expect some serious shifting. So whether by accident or design, it is a subtle detail that adds to the overall effect!