A group of my friends who we refer to ourselves as the Virtual Campfire (since we spend a good amount of time while we're working sitting in a Facebook message chat together shooting the shit or critiquing each other's pieces) have set weekly challenges for each other during this winter break. The first one was a self portrait based on a favorite character of ours.
I chose Calvin and Hobbes as mine. Bill Watterson has always been somewhat of a personal hero of mine and I own all his books. It's actually rather amazing to see the evolution of his artwork through the years he did C&H and in the end, his mastery of colors is truly excellent.