Nice picture, especially of Billie there. I wouldn't mind seeing the story this goes to, too.
Pinky and The Brain: The Final Revolution by @VeryPinkyGirl (Kristi Russell)
A comic-book-cover-type PaTB pic, featuring pretty much everyone. (the girl mouse with the brown hair is Brain's sister.)
"What are we going to do today, Brain?"
"Same thing we do every day, Pinkie: TRY TO TAKE OVER THE WORLD!!"
Gotta love pinkie...
Kaine's doodles: http://www.side7.com/art/tycokain/gallery.html