@Jewelsroleplayerguild.com/topics/90816-amnes.. is where the thread is happening. We have another player who is keeping it flexible, so you can do that too.
But, ultimately, the first step in the campaign is to figure out what is going on, why you don't have memories, and then decide what you want to do from there. As I will be controlling what you do and do not remember, when you regain your memories, etc. We can totally play it by ear so far as your history is concerned. If you piece something together later on, run it past me then. If it is something that could affect role play, well then I will adjust the story accordingly. Fill it out what you can of a profile for now, and we'll get the ball rolling!