Once you’ve sent in your questionnaire and it has been “approved” you can set up your shop. @irid3sc3nt will create another thread probably later today that is only our shops and it should show up on the active swap thread (not yet though).
Here is last years. The first post on that thread explains how to set up your shop and also how to claim items (you must message the seller and moderator with certain info and in a standardized way which is important for this swap.)
It sounds a little confusing, but starts to make sense after you do a couple. 