Your shop graphics look pretty cool, and go nicely with your shop name. I'd say to focus more on your overall aesthetic, especially your pictures. Individually, they look pretty good, but they don't seem very cohesive. For example, some of your items are in snow, but others are outside in what seems to me to be picnic-y weather. Either is fine, but I'd stick to one. Just as my opinion, I quite like the feel of this (but maybe a bit brighter):
https://www.etsy.com/listing/219114624/custom-dotted-dinner-plate-part-of-the?ref=shop_home_active_8I'm not too sure how I feel about eating outside in the snow, but that's just my opinion.
Also, your second and third pictures don't occupy the full width available.
Your item descriptions should be more informative. Perhaps include some measurements? You could do a bit of research to see what kind of information people want. Bear in mind you're selling online, so customers will want to see more.
Since you're selling glass, you may want to touch on your packaging, so people know their item *should* arrive safely. Continuing from that, you may want to write in your policies what will happen if something does break.
Now, SEO:
Try longer, phrase-based tags rather than single-word ones, as these are more effective. There are quite a number of threads and teams on SEO - do read up and work on them. Cindylou's team has lots of useful information.
In general, I'd say you're doing quite well. 5 sales in less than a month - very impressive!