Hello guys, I don't post often here (I know English only a little), but now I've got a problem, and I need help to solve it.
I don't know why my art is always an epic fail, I do it all by myself, and I don't think I'm a noob (maybe).
I want to understand if my methods to make pixel art are wrong, colours, shades, anatomy, perspective, I don't know... Maybe it's all of that, but I've seen people doing pixel art with an ugly lineart or stupid errors, but their works are viewed and rated more than mine. =/
I need to understand how I can improve, and I hope to fix all of my problems...

for the ones who don't know me, i post some example of my pixel art (or click on my gallery in sign)
(from most recent)










for more works http://www.pixeljoint.com/pixels/profile.asp

thanks at all.