I was just recently featured in the Etsy Wedding mailer....took me completely off guard, too! I had a nice boost in views, but nothing came of it. BUT, that is ok...the exposure was sure nice to have :)
I agree with Eilidh...check the Merchandising Report for what types of things are trending now. I haven't been as faithful in checking the report in recent days, but I did find it helpful when I was revamping my shop.
Another thing is...check your pictures. How do you feel about how your creations are being displayed? Do the images look attractive? Is it something you think you might find in one of those e-mail blasts?