I was recently asked to do an outdoor Ink Off with another illustrator for the AIGA in downtown Denver. They set up a huge wall covered in brown craft paper and we had one hour to create a mural using a bucket of ink and some big brushes. It was interesting to work in front of a crowd and see their reactions to the improvised work. What a blast! You might find a photo of this on my Facebook page Tom Pounders, or the other one, entitled Pounders Ink.