You're very brave, and smart. You should do ambitious projects more often, because stuff like this it's gonna make you jump leaps and bounds in your work. You'll be as great as Sakimi Chan and ArtGerm in no time at this rate. I think this piece is a success, you've done very well with it. The colors are phenomenal, they always are. I love the warm palette you used, it's practically sweltering. The way the bow catches the viewer's eyes and keeps it there, making the viewer embrace the regal masculinity of your figure is breathtaking. The composition is crazy. If you added some directional lines or blurred the background it'd give off a great sense of movement, and dynamism. Speaking of movement and dynamism, his hair flows perfectly. It gives a little sense of movement, while framing the figure in a splendid way.

Now they're are some problems with this piece, but that's OK! It's nothing most people would notice. I've trained myself in understanding composition drawing to look for this kind of stuff, and I really hope I can teach you some ways to avoid the same mistakes. I really want you to do more ambitious pieces like this, I think it was a great experiment, and that challenging yourself is very good. I definitely want to see you challenging yourself with stuff like this in the future, so please don't let my words deter you. So firstly the visual clarity is problematic. I noticed the hand and arrow sticking out of the figure not within view of the audience, and that was a great idea, but it's not clear what it is unless you're looking at it for a time. The bow actually adds to this problem because it has such high value contrast and keeps the viewer's attention. Not to mention with the bow being horizontal it leads the eye away from the hand and arrow causing more confusion. What I would suggest is changing the composition so the hand is more obviously in view, change the hue of the hand to differentiate it from the hue of the horse because their colors are too similar, and making the bow vertical so it leads the eye down and towards the fallen foe, and frames the figure better. Visual clarity is the only vice in this piece though. The form and value is A+, your figures look very real, and very compelling. Your horse's anatomy is amazing. I know many artist who find drawing horses difficult, but you did very well. The way you handled the metal armor and chain mail is extravagant. This is a flawed piece, but it's still a fantastic piece. Your work is always so divine, because you try so hard to make it look good, and it does! It's look great! Keep it up! I'm rooting for you. Truly well done. Sublime job.