I am on Pinterest,
http://pinterest.com/softearthart/ and fine it rather good, not sure how it equates to sales etc, but people seem keen to follow along.
I think one of the secrets is to use all methods of Media coverage.
I have a successful blog www.softearthart.blogspot.com
and over 1000 likes on Facebook
https://www.facebook.com/softearthartNo one knows who you are so you must find out the people who would best like to buy your items( your target market) and target them
Favor like minded people, heart their shops, like them on Faceboook, start up a small convo
It is a bit like when you first started out with the idea to sell your art and craft, no longer did you want it in the cupboard, you put it out into the world, so now you must become known and meet and greet
Cheers Marie