Hi Agathe. I have 3 comments right off the bat.
1. Add more items. It will increase your chances of getting found and make buyers take you more seriously.
2. Photograph your items on backgrounds that aren't so busy. It will look cleaner and make the shop more appealing.
3. Read up on titles, tags, and SEO's and how to use them. No one is going to search "rainbow rounder" when they're looking for a pair of earrings.
This thread should help a lot:
https://www.etsy.com/teams/5002/etsy-success/discuss/16149239/page/6?post_id=311390125&prior_page=1Best of luck!