You may want to start with your avatar, I don't take shops seriously if they don't have something there. Look at your policy page, it has some typos.
You can tell that some of your photos need work, they will probably always need work.
As for SEO, I am no expert, and not that good at following this advice, but your titles aren't that great. It is said that you should put what it is first. So, for this one
http://www.etsy.com/listing/90589635/sparkling-swarovski-crystal-heartThat advice would be "Necklace Swarovski Crystal Heart" However, I think the way you have it makes sense. But, I for one wouldn't search for that. I think to put keywords first is a good idea, so maybe start with 'heart' or 'love' or 'mothers day' or something like that. I enjoy naming my things odd names, and it comes up in my keywords way more than necklace ever does.
Hope this helps. Also, get out there and promote yourself in the community, that will help as more.