First off, your stuff is cute! Don't get discouraged. Your stuff is arty, so you would probably be fine to add other type of artwork to your store, like rachinator87 said, more stores, more work. It might attract more and different interest to your work. Here is one of the biggest "secrets" to marketing on Etsy; and that is that your stuff appears at the top of the search engine results on the first day you post it, then gets further and further down the list as the days go on. Some of your current stuff is probably on page 87 by now; where hardly anyone will find it! So here's my point, and a big time saver too; only post one or two new items a day, not all at once. Each new post is like a little ad on page one, attracting new people to look at your store. Also having more items works. That Etsy Success newsletter is awesome for more involved marketing advice; Etsy offers endless tutorials and tells you everything you want to know. I love it!