Haha, my Graphic Design teacher in high school used to have us do this all the time. We all got sick of it because practically every project we did almost the entire year was a variation of this. Then, one day, he just disappeared, and someone else that we had never seen around before took his place o.O He never came back. We used to joke that the new teacher stole his job, bound and gagged him, and stuffed him into the supply cabinet (which, for some reason, was always locked with a chain and padlock) haha...
Anyway, neat drawings, maybe I'll do one last one if I find time this weekend.
"If a man does not keep pace with his companions, perhaps it is because he hears a different drummer. Let him step to the music which he hears, however measured or far away."
-- Henry David Thoreau