Sarah, I would recommend in the first instance that you read and apply 1 & 2 in this link as it covers your entire shop and not just SEO/relevancy.
http://www.etsy.com/teams/7702/sassy-critiques/discuss/10092412/Also join the team if you want further advice, plus of course you can post SEO related questions here. After that join one of the other SEO related teams that are operated by SEO experts. These two in particular are excellent, both are SASsy Mentors as I am and they have written expert resources which are constantly updated based on their own research on and off Etsy and in connection with changes on Google e.g. the recent Panda updates.
http://www.etsy.com/teams/11352/relevancy-and-seo-for-all-etsy-shopshttp://www.etsy.com/teams/10713/cindylouwho-teamAs well as the resources they link to on their team pages they also link elsewhere and on top of that there are a lot of very helpful resources on the SASsy Blog and of course on Etsy.
http://etsymentors.blogspot.co.uk/ The reason why no one has mentioned the Twinkly links for a very long time is that they are out of date, don't cover Etsy relevancy at all.
I know you weren't asking for a critique as such but I can see a few areas at a quick glance that you need to look at. Firstly change your location to the correct format or you won't appear in local searches. This has nothing to do with SEO but it will be a problem for you. UK locations are town/city, country, United Kingdom. Secondly your first part description is an exact copy of your title - this will hurt your SEO because it is a risk that the page won't be indexed as it is duplicate text. Plus it will look very wierd to a buyer coming across a listing on Google ie the url link and the text underneath say the same. Thirdly your tags are not written for relevancy - they need to be 2-3 word searchable phrases made up primarily of text from your titles.
Claire
Team Leader