So this is a Gouache Resist I did a little while ago. Basically what that means is you paint the picture you want, then cover the entire piece in India Ink, and let it dry. You then run the entire thing under water, and the ink is repelled from the gouache paint. So anything not painted (meaning any paper showing) is going to turn black, and you get some cool dropout effects with the ink, as shown.
Also, I've been really into these carnivorous rabbits lately, I don't know why, but they're fun.