This was a fairly large drawing (as evident from the teeny signature in the corner), and I must admit now that the grades have been assigned that I cheated: instead of drawing it in real life, I took several digital photographs and worked from printouts.  Then again, can you really blame me for not wanting to spend several hours each day for a week sitting outside on the parking lot (no, we don't have a garage) in inclement weather?  It was all done in black pencil, and a single hue was introduced in the end.  It is by far one of my favorite pieces.