This is a piece I have from my sketchbook where I used really old polaroid film and went on a polaroid spree. I then tried out marking up and working into the polaroids.
A sketchbook GPOY, 2002
Polaroid, ink, collage
To see more of my sketchbook pieces you can go to: http://www.katharinefriedgen.com/sketchbookgallery.html