I actually create kitty "neko", or also known as "neko mimi" ears. The ears I make come on a comfortable headband and have the ability to slide from side to side for desired placement. I also make tails as well. Not sure if you are still interested or not, but here is a link to my gallery:
I sell not only online, but also at a few cons (NDK and Banzai so far)
I sell within and outside the USA and have feedback available on a few auction sites and my sellers live journal account if interested.
use the files listed on the left hand side to navigate.