I've never had strong feelings about this before, but I started by taking things slowly. So I just did some hand drawn art that I wasn't really expecting to be that great, its mostly just for practice. Then when I started getting a bit better, I created an art dump on the forums so that people could see my art and hopefully comment on it, which some people did. Then when I felt like I was ready I moved up to D/A and I have some comments on there. It goes kinda slow, but I know if I keep working at it I'll get better as well as trying to challenge myself to.