Rather than focusing all of your energy on Twitter, keep that in the back of your mind while you are working on your SEO. For example:
http://www.etsy.com/listing/115883134/pearl-wedding-earrings-swarovski-crystal?ref=v1_other_1You are getting there, however you have a few tags that made me a bit cringey, i.e. cheap wedding; I don't know about anyone else but that is not something I would search for when looking for wedding jewelry. And one really key one you are missing: "wedding earrings"; how many people would search for this? Lots! It is in your title, add it to your tag. Look through the rest of your items and make sure you are not using ANY one word tags and that all your tags are keyword search phrases that match your titles.
Keep working on your photos; make sure everything is cropped appropriately and that items are centered in the picture. Make them as bright and saturated as possible. Keep those backgrounds white.
It is hard work I know but if you continue with your efforts they will pay off!