Welcome! Bad or good, don't feel there is any reason to not give a story a shot. This site is a great opportunity to develop your writing, no matter what level you might be starting at. If you need any help, whether technical or creative, there are people here willing to help. Check out the articles in the Help & Info section for a little bit of guidance, if you're interested. What kind of stories are you interested in?
Even if you never write, there are lots of ways to be involved in the community here, so have fun and it's good to have you here!