I neglected the markers and stuck with charcoal. I think these drawings are less considered than ones I've done in the last. I'm attempting to speed up and get tonal work in there, so until I'm used to the change of pace, my proportions go a bit skew-whiff in places.
Top line: 3 minute poses
Second line: 5 minute poses
Third line: and 15 and a 20 minute pose
Bottom line: 30 minutes