I don't think it is your prices or your shipping, since they seem very reasonable to me. I think you have some unique and interesting items; what is missing for me is the context of how they are related and what your overall brand is about. For example, each item you have has a different use, some are handmade, some are found objects. What inspires you to collect and/or make them?
Also, you mention celebrations in your about section... what kind of celebrations are you targeting? Gretchen mentions the number of items you have for sale... I have heard this many times as well, that the more you have (50+) the more you are likely to get visibility and sales.
With the brooches, showing them pinned to an outfit or scarf would be a great way to showcase your vision of how they should look.
Finally... if you haven't created an About page for yourself or your store, this is a great way to tell people a little about yourself and what your "brand" is about.
Keep up the good work you will get there!