Grim, to get better, start at the basics. Do not do stylized art. "But that's my style..." is a weaklings' excuse. Draw from real life and learn anatomy if you want to get better. From realism comes stylized art such as anime, western comics, manga, such styles.
The anatomy is kind of wrong there, arms are short, the torso is small, a bit misshapen. But I really like the style, with no contour lines.
I hope I helped a tad bit.
Hmm, I don't have an avatar, I hadn't thought about it...