Anyway, it's over here at http://xkcdcouldbebetter.proboards.com/index.cgi?board=general so get cracking. You don't need to register an account to post but if you want us to know who you are you certainly should. We can all have avatars, people! SO MUCH FUN.
Ch00f has a welcoming, explainy type message over here. I recommend that you upload your images there rather than here, as we migrate on over.
Anyway, today's blank comic is here:
I highly recommend mixing and matching with the last well comic: