Here are my tips:
1) Want to know whether your treasury made it to the front page?
I just found out how - by signing up with your shop name and your email to statsy.herokuapp.com/featurator
2) Always refer to the Etsy Merchandising Desk for the latest trends.
They always pick the treasuries for the front page that feature items that are aligned with the latest trends. Here is the last post there:
http://www.etsy.com/blog/en/2013/trend-watch-spring-2013-with-etsys-mary-andrews/3) Always refer to the "Today's trending tags"
You can find them on the right hand side when you click on your name, then on "See more" next to your treasury lists.
4) Always have fun!