Personally I wouldn't lower your prices unless you have that much of a profit margin that you can afford to do so.
I'd suggest that you take a good look at your titles and tags to start. On this piece
https://www.etsy.com/listing/121219333/bridal-flower-hair-clip-rose-hair-clipYou've called it a
"Bridal Flower Hair Clip Rose Hair Clip Flower Hair Clip Rose Barrette Flower Bridal Head Piece Cream Rose"
Notice how many times a single word has been repeated? The biggest problem with this type of title is that it really doesn't make any sense when a potential buyer is reading it, nor will it be found easily in a search.
Flower is used 3 times in the title, Rose is used 3 times, clip is used 3 times, and Hair is used 3 times.
Is it a barrette, a head piece or a clip? When I look at the last photo, it looks to me like a clip with a flower attached, so if someone is looking for a head piece and comes across your listing they will be disappointed when its not what they expected.
If it were me that were selling that piece, I'd call it
"Polymer Clay Rose Hair clip, cream flower, life like" or something along those lines and leave it at that.
If you are targeting the bridal market then that's where you need to focus your marketing.
One thing that I would suggest is that you vary the listings you feature on the first page of your shop. Although I absolutely love the pink pieces you are selling, it would probably help if you were to show a variety of your work in different colours rather than so many of the same rose colour.
Marketing takes time to take effect. Change won't happen overnight but if you really are reaching your target customer you should be able to do quite well.
Have you sent a newsletter to your existing customer base (who have signed up for it) recently? What about your customers you had before you opened your shop?