It was a very spur-of-the-moment character because I wanted to try making something big. It's not very clear but it was mostly an exercise outside of my "comfort zone" (in quotes because I don't really have one; I'm bad at everything, haha).

@Pheno: Yeah, I just reached a point where I had no real clue what I was doing, so I stopped. I actually wasn't even going to submit it, but I realized I only have... one other thing here. Just thought "might as well post something, might get some decent feedback maybe." 100% agree with the comment on anti-aliasing. I was very unsure if the multiple pixels were helping when I did them initially as they looked kind of odd at the time. It might just be the choice of colour, possibly? In that case, maybe I ought to have used multiple colours..? I am not certain. What I am certain of is that it could be better! I appreciate your feedback!

Looks to me like you weren't done with the lower body before submitting. The shading on the torso and the ruff around his neck is really good.

For the anti-aliasing on his sword, you will almost certainly want to use multiple pixels for each "step," because single pixels on a slope like that won't really help the smoothness at all.

There are some details I don't really understand (legs and tail), it's a nice piece though!
Is it based on a game/comics or is it a character designed from your own?