Make sure you make an announcement post including the required information @mattclarke is looking for mostly the account you are playing on with public settings so the level can be tracked by him. You will also want include the tag #poecomp so he does not miss seeing it. That tag we will also be using during the event for those in it that are posting updates on their progress.
It's ok if you don't end up but you do at least need to be sign up to count.