Simple -- You write until you finish the story. Leave it alone for a while, write another story. Go back to the first story and read it again. Rewrite what needs to be rewritten. Leave it alone again and write another story or read the second story. Come back to the first story and read it again. Rewrite if needed.

If it's finished, send it to people who want to read it, get their feedback. If they give you C&C, look to see what they're talking about makes sense. If more than one person mentions something, look at that and see if you missed something. Make corrections if you think they're needed.

The put it out there -- fanfiction on websites like Mediaminer, fanfiction.net, ect. If original, either try to get it published or publish it yourself.

The key is to write, write, write -- it's the only way to improve....

Craig