Marvelous work on your...what is it? A 1 hour class? dilandoubishop. Marvelous and very great job on your current work on the human figures. (especially your quick roughs from 30s-1 minute)
I feel that the ruffs are just not too quicker enough I see, for they are very too extraneous in lines, but otherwise, they're all very, very, very clearest and cleanest. Would you like to please be the most boldest and ruthless with your line economy and organic flow with 2 hours of 59 second quickest poses? (7200/59=122 quieckest ruff sketches) (ruff=rough, a Disney term, more info, look into Dick Williams' The Animator's Survival Kit, Expanded Edition) (custom timer)
As a result, your lines and organic shapes and forms will become the least stiffest and scratchiest, and the most fluid, cleanest, dynamic, spontaneous, liveliest and energetic. For more details, be sure to look into the Mike Matessi books on PDF and the Proko Gesture drawings for free on YOUtube.
Good luck to you and your goal.