@shampoo- the problem with style was mine for a very long time. I thought I was original, because when I was a kid no one drew manga, as I did. But by the time I got to eighth grade and was still drawing stupid kids with spiky purple hair and swords too large for their scrawny arms, I realized that lots of people drew manga. Lots. It took a lot of work to find my style as an artist. Even now I kinda struggle with that; my art is stuck between NastyJungle and older LORDY's stuff and the stuff at Knocksteady, but not as good as any of them.
@aggie- Your linart is definitely not bad, nor is your coloring. But if you feel that way about your art, do some looking into color schemes. I don't do much coloring, but simple stuff like compliments and contrasts can work wonders. More advanced color schemes, triadic, monochromatic, etc., can really make your art look professional.