Basically all you need to do is sign up, insert some code into your blog (see the widget on the lower right side of my blog?) (crunchydomesticgoddess.com)
Shop the pictures below, or on the upper right side of my blog under «shop.» (therealfashionista.com)
Just scroll on down the page and check out the right side of my blog and copy & paste the link. (rockmyvegansocks.com)