So.. I'm doing another ATC swap on my yahoo group and this one I'm hosting and it's going to be a watercolor and pen and ink swap. The idea is for you to do some watercolor and some pen and ink drawing on your ATCs. It can be whatever you want. I'm posting some ideas for people on my group to see, so they can get an idea of what to do.
These are just the ones I have done so far but you can do anything you like.