Hey Luke!
Your art is awesome so I think you'll definitely have success if you do some tweaking to the setup of your shop and listings!
First and foremost: fill out your store info and policies. Having policies written out regarding refunds, returns, shipping practices, etc helps potential customers establish a sense of trust in your shop before they make a purchase. Also, explain a little about yourself, how you're different, what you do as an artist, how you make your pieces, etc. Etsy's "About" pages for stores can be very handy for getting across your style, influences, and methods!
In regards to your listings themselves, I would urge you to talk a little more about your pieces in your listings. What kind/quality of paper are they being printed on? Explain the paper finish choices for someone who might not totally be familiar with the differences between Matte and Gloss and how they affect your prints. Say a little bit about each individual piece itself, too, like where you got the inspiration or how you made it.
Lastly, adding to what Marie said above, your listing titles need some modifying. Right now, all of your pieces have the exact same title! Titles for your listings should concisely explain what the listing is for but also differentiate it from others in your shop.
Awesome work and good luck with your Etsy selling! :D
