I'd suggest that first of all you complete the basic construction of your shop.... the infrastructure that holds it all together.
A good shop has a shop title, shop announcement, seller profile, shop policies and a location listed.
Right now, all you've got is a location.
If you don't have a good foundation, the business won't thrive. When you build a house, you don't start by putting the furnishings on the land. Rather you start with the foundation. The same thing with building an online business.
Once you've got those items in place, then its time to start adding items. I'd suggest that you add at least a full page of items to start before you even begin to do any marketing for the simple reason that you want your buyers to have a variety of items to select from.
Then continue to add new items on a regular basis so that your buyers keep finding fresh things that they just 'have to have' when they return.