seashell, I think you have a lovely and very saleable product. The prices on your items that have seashell frames are at $70. There's a lot of work, glue, and time involved in creating those. They should probably be priced higher. The ones with fewer shells, glue, hours, priced about right. The more your raw materials cost and the length of time spent creating the item ought to determine the cost of the final product.
I noticed that some of your pictures look a wee bit darkish. I would like to see close-ups of the ones you've shot on the mantle piece. (and don't let Danielle catch you showing only 2 pics of an item!!) If you have a photo editing program, lighten your pictures up a bit. i.e. the picture of the beehive shells is perfect. Did you do that outdoors? In the pic of the three shadowboxes on the mantle, you can see how much darker that is compared to the pic next to it.
I think your shop is off to a good start with the number of sales you've had this far. Your average is about 4 sales per mo. or 1 per wk. Of course that's just the beginning. It's a geometric progression from here on out. I wish you much success on etsy.