Hi Ava . You can do a lot to improve your shop. I think what you have really is a beginning of one. It takes time to develop it and improve it.
1. Have more items. Fill up the first page
2. Improve your pictures. Your pics are dark and its hard to see what the earrings are about.
3. Definitely research how to write titles and tags .
4. Stop doing ads at least for now, u til you have a better developed shop. I did ads initially too but that didn't make any difference. People started buying when they had enough items to look at and pick from.
And after you do all that ask others to look at your shop and give you feedback, on etsy, fb, and people who you personally know.
Good luck.