It's so great to hear that putting in the time and hard work pays off! I've been selling on Etsy for about 9 months and I keep learning more, that hopefully will translate into ever increasing business!
A big AHA MOMENT for me was adding direct check out. Being from SF, it seems like everyone has a PayPal account, but when I finally got around to linking my checking account to Etsy and activating direct checkout I got some pretty immediate bigger sales from the middle of the country. Not that people in the middle of the country don't use PayPal, but I don't think as much as in SF! More choices the better when it comes to paying, just like Etsy says!