Welcome. I have a few critiques. The first thing that you'll hear a lot is that for search engines to pick up your items, the first three letters in your listings are the most critical. I would definitely work on your titles. I picked a couple. "The kid in you" is a cute name, but no one would ever type that phrase in while searching for jewelry. Same with "Michelle O Collection". I love that name, but search engines won't know how to find it. I just use general terms (I sell quilts, so I say "Toddler Robot Quilt" and then describe the color, size, etc.).
I don't do jewelry, so I don't know if anyone who does would have anything to say about your display of it, but I think that the darker backgrounds, especially the ones with the wrinkles are distracting.
The good news is that I think you have some beautiful work in your shop and I LOVE your banner and avatar. They are very "eye catching". I think that you are definitely off to a good start, but we ALL had to go back over out listings and do the three word revamp of our listings.
Good Luck and welcome to the team!