I like your style and I think it's quite good :)
I guess there is very important problem with your works - background! :o Try to make some. Even if only sky with clouds or something more complicated. Remember that not only character describes your art but more important is action ans place behind the character.
If you draw only char for me it's like concept art. If you make if with a lot of details and ex. just black background and person is sitting on somethin we focus on person. But if it's plain person with not a lot of details - I'm sorry, but nothing very impressive!
Advice? If you make 'plain' character - make more detailed background. if you make 'plain' background - make more detailed character ;)
You are on good way, I like it! I guess I will be here more often to see your progress :)