It's awesome to see a fellow Chicagoan on Etsy! I'm technically a surburbanite but close enough.
First, LOVE your shop!!! Very fun and original creations!!!
One suggestion would be to optimize keywords in your shop welcome. That plays heavily into SEO working in more keywords might help with being found in searches. Also, I really think you should add something in your welcome about your original photography. I think your point of view is really great and very different from most photographers on Etsy. I suggest really playing that up.
Use your "featured" items to showcase items that are on later pages of your shop. They seem to kind of repeat things on page 1.
In this listing, I think image 2 should be your main image. It shows the frame and mirror off a lot better than the close-up. I think the pictures of the mirrors and frames in context on the wall are really helpful to give a sense of scale.
http://www.etsy.com/listing/103564157/pin-up-girl-wall-mirror-retro-decoupage