Hi guys! This is my first post. I've been doing pixel art for a couple of months, and while I have passed the basic stage of being able to put stylus to tablet, I am now making works that I'm sure are filled with rookie mistakes. But I'd love to learn how to improve!

This piece took me quite a while. I can't think of anything else to improve it, but I get the feeling it's a bit ..meh.. Help me out, what should I do?