What kind of pencil did you use for the darks and lights?
Most everything was drawn with a regular old .5mm mechanical pencil you can get at the grocery store with 2B lead in it (they usually come with HB). The darks though were done with a 9B and 8B pencil.
how the heck did you do the fencing in the back? Was it something as simple as taking an eraser to it?
The fencing was done in about 5 minutes with a block eraser on it's side (nice sharp edge) and a straight edged piece of cardboard. :) If I hadn't been rushed I'd have went back and gone over the links with some dark to make it look like the lights were actually highlights. As it was though I didn't have time and had to settle for just crosshatching a white line. Sometimes the simplest way to do things is the best. :)