You are indeed pretty good! Your anatomical skills are very good and the poses of your characters aren't stiff or unnatural, I like it.
There are only 2 points I'd like to criticize: I'd like to admit that I didn't look at all of your images but those I was looking at lacked a bit of contrast. I mean, the colors you chose are really fitting and such. But the shadings are way too bright. It's obvious that you know where to shade and where not but your shading sadly lacks contrast.
The other thing is that you seem to have problems to let your characters interact with the background. Your backgrounds are really beautiful but it always seems that you simply put your characters on some already drawn background. They seem to be a bit out of place, it seems like they are not really part of the picture ... It's hard to describe but I hope you understand what I mean.
Anyways, I hope that helps. Please keep up your great and awesome work!
I'm looking forward to see more from you!