Yeah, maybe try to go for a more centaur-ish look? Also, the details are barely noticeable. For example, the abs aren't visible at all. I also feel like you can make him larger in the space provided. It seems like you have "narrow vision", if you get what I'm saying. Also, you could increase the contrast, in general.
Edit:
I was thinking something that looks more like this.
But, it's a significant difference between yours so I apologize if it's not what you're going for...The hat's cut off because I was lazy.
Edit:
I was thinking something that looks more like this.
But, it's a significant difference between yours so I apologize if it's not what you're going for...The hat's cut off because I was lazy.