You have of store credit. To use it, simply place your order and you will be able to choose store credit as the payment method when it comes time to pay for your order.
The newest innovation from the folks at Toho, Demi Rounds are seed beads that have basically been cut in half. They come in 2 sizes: the 8/0 Demis measure 3mm and the 11/0 Demis measure 2.2mm. These seed beads still have the same hole size, so they can easily be incorporated into stitched and beaded pieces using your choice of stringing material.