I've been drawing since I was a child, consistently, and I just don't have it. I have a difficult time drawing in 3 dimensions, and that's only one thing that holds me back. Nevertheless, it's a love-hate relationship for me. I love her, and I always go back to her, and then she abuses and ridicules me, before I flee yet again.
Either way, you ought to take some sort of class or get involved in the art community. It's the best tip I can give.
Someday down the road, I'll need illustrations for a game I'm developing, character art mostly. Perhaps you'd be interested?