Are there any other places I can show off my tees?
There are some great t shirt sites out there to post your t shirt design, for example shirtoid.com, mintees.com, rumplo.com and a few others. This is a great way to build buzz in the t shirt internet world. There are graphic designs, and art community sites, like behance.com, deviantart.com, flicker.com. Other sites like these can be great in gaining referring traffic.