One of the first lessons in Drawing 1 is the dreaded Blind Contour Drawing. To successfully do this, you must slowly trace the outer edge of your non-drawing hand with your eyes while equally slowly drawing that contour on your paper without looking at the paper. A good blind contour drawing takes a long time because you pretend to be an ant crawling along the contour, registering every blip and detail. Good blind contour drawings are replete with articulation.
Here's a detail of my page that was shown above. I had decided to do blind contour drawings of the mountains I could see from the valley below our house today. It was dark and cloudy with a few raindrops spattering down. After I did the mountains and my eyes felt great from tracing distant contours, I squatted down and did blind contour drawings of four little spring flowers.