If you have anything to contribute, go ahead and edit a page, or create one, or upload an image (be sure, however, to comply with our editing policy, and to read the guide to creating character articles if that's what you're creating; you may also want to read our list of useful templates). If you are not sure how to edit, or otherwise need to test, use the Sandbox. And if you spot a problem affecting the whole wiki (e.g. spam or vandalism), contact one of the admins. Have fun!
As mentioned above, this wiki is closing as it's rather silly to have two wikis on similar subjects. Hence I'm merging them into one, the J. K. Rowling Adult Fiction Wiki; please help by moving pages to the new wiki.
The guide to writing character articles needs to be fleshed out a bit; I've covered the basics (use a character infobox, what all the infobox parameters are and how to use them, don't forget to add a defaultsort tag), but the bit about the article body needs to be fleshed out (e.g. how to use the spoilers/endspoiler tag pair).