HI Cerulean Plume,
Great shop! Looks Awesome! So first I though there is nothing to say, let's tell her, it's great and that's the end of it.
Then I clicked on one the item, and I think the listing was odd being very long with all those lines, it was a little hard on my eyes and I felt like you are giving the readers a little homework to do. It is different from what I normally see, so in that regard it's a great idea to stand out, yet I couldn't get through the listing, just clicked away instead. I would adjust it with making them easier for potential buyers. Also noticed that some of the items have only 3 photos. I would fill up all the slots, again just looks nicer and I was told a same some times ago:) I would use close ups and perhaps how it looks on model..more variations.
I would harmonize the (either the style or the color) of the avatar/banner, so it's more balanced.
It looks like you don't have a twitter page or it's just not on your shop, underneath your banner.
I hope I'm not coming down too harsh, most of these things were my issues back then as well (and I'm sure I still have a million other hah), but that is why I'm noticing them.
Hope they help:) and don't forget to have fun.
Gabe