Hi there,
Feel free to take or leave my feedback- only you can truly know what you are wanting to do with your shop. :)
In my opinion, I think the main thing holding back your shop is that you don't have enough items listed. Especially in the very saturated jewelry market, you will need many, many items (shoot for 100, maybe) to get noticed more. I think the pictures look a little washed out, and the banner could use a touch of color so it doesn't appear blank-ish. Prices look all right to me, but you may want to solicit other opinions.
Best of luck to you and your new shop. :)