Like Jill already said, October is usually the best time of year. And, the more sales you get, the more your name is out there and the more customers you'll gain. It's a cycle, definitely.
As for suggestions, I think it's awesome that you are using your tags. I agree that "tribal" could be a GREAT tag for you! Keep using every single tag, even if you think your "descriptive" words are no good! Better get a hit or two from each word than none at all! ;D Your pictures are cool--they ARE kind of dark, but not in a "this is poorly lit" kind of way, so I think that will appeal especially around Halloween.
In titles, you want to make sure you have some of your strongest description words (you've done that on a lot already--"peacock", "zebra stripes", etc...). I do it wrong, quite frankly, because I insist on TITLING each mask, and that isn't honestly the best way to drive traffic in. The first words of your title are the most important in the Etsy search engine, and I completely waste mine with my official titles. ;D
As for pricing, if anything you can try increasing them a bit. Feathers can be really expensive (especially the super-flamboyant ones like you are using!), so people expect them to cost a certain amount. If you aren't charging enough, then that can be a turn-off because people are afraid your masks are "cheap". You will be the best judge of what you feel your masks are worth, quality-wise!
So, my advice really boils down to: Keep on, keepin' on! Don't get discouraged! And, if you feel like you still just aren't selling what you'd like try experimenting (with tags, pictures, etc.). Good luck! :D
