Hello Hannah
The tags that you have on your listings which appears at the bottom of the page, you need to think what people would put in th search bar to find your things- for instance, on the first thing in your shop - cup saucer and plate , the tags you could use would be cup and saucer - vintage cup and saucer, retro ect . this helps people to view your items more.
Maybe try and search for things what other people are selling and look at their tags to give you more for your own.
Hope this helps
Carole