I wasn't able to scan these today, so I hope photos will suffice for now (please excuse the sacrificed quality). I wasn't sure if I had to do this using pencil or if I could use my tablet. These are drawn on a sheet of 18" x 24" newsprint using an HB pencil. I tried not to use an eraser.
When I tried to do the additional passes over the lines I already drew, they came out looking somewhat hairy..... oh, and are we supposed to be drawing the straight lines from our elbow, wrist or shoulder? In my previous practice sketches for this exercise I tried drawing longer straight lines from the shoulder. In general, the faster I tried to draw the less control I had over the line's direction.... especially on the ellipses, which were hard to draw in a non-hairy fashion when I was trying to make multiple passes like you said to do.