I'm working on creating a Anime Fanfiction Writer Wiki with several articles on how to improve their writing. So far it includes dialogue (grammar, dairy entry, flash backs, thought), sentence structure (passive vs. active, tense), POV, creating a penname, finding an archive, common errors, etc. It also includes definitions on things like yuri, alternate unvierse, drabble, etc.
It's in the beta stages now. I am looking for contributions ^_^