Bored in class, you know the story. :P

Upper left was me trying out a new angle, based on what I've figured out about the geometry from that perspective.

Upper right was me seeing if I could still do the sideview after drawing the other angle.

Lower right is a week or two later, where I tried the one angle again, but I got better results that time, it's also my favorite of the doodles! ^_^ (parden my language in that one, by the way :S)

Lower left was me being bored while photo processing this for the web. I still have no scanner, so I just snapped this with my digital cam and arranged it together. I bumped up the contrast so the lines were more comfortable to see, but it made everything pink for some reason. o_O

These were all doodles that I did without sketch-lines (including the lower left), so if things are weird and disproportional, that's why.