The 1st thing you must do is add more products. I saw 2 pages for an entire store. With so few selections, you can't expect a bundle of sales. To increase sales you'll have to come up with designs that will appeal to the masses rather than only a specific demographic. I have a store with a fulfillment company called ZAZZLE. My products aren't geared to the masses either but I have a major selection to choose from. Something for everyone. In this case, the more the better. Imagine yourself as the shopper coming to your site. With so little to choose from, how long would you stay there if you saw a few designs on a few products? I hope this doesn't seem harsh. It's not meant to be.