Below, two different projects: same subject matter, done two different ways. For the first, we had to draw a stylized head in ink, then sketch the same head in some sort of dry medium. I was forced to use pastel; my only other choice was pencil crayon, and I haven't used pencil crayon since I was in the eighth grade. At this point, I'd be more proficient with a hacksaw and a piece of wood, and I suck at 3D sculptures.
Where was I? Oh yeah, pastel. Chalk pastel. Horrible experience, got hives everywhere. Will not repeat that again.