Hey! You have a great shop! I totally love your flower rings. Here are a few things that came to mind when I looked at your shop.
-your photography is great, and showcases your beautiful jewelry well
-jewelry is a very dense market on etsy so that does make it harder
-I would work on your listing titles so that they are more descriptive of the item. For example instead of saying "elegant necklace in three colors," your could say "statement circle necklace - brown and silver." Or something like that. Your titles play into you SEO
-Also, I would start playing with your tags. When I have items that sit unsold, I start looking at how I could improve my tags.
Best of luck!