Kris Pearn and Working Faster

Lately I've realized that I work at a glacial pace. This didn't bother me in the past, but I can't afford to spend as much time as I do when do client work (the last 3 projects were 100+ hrs a piece!).

I decided to take Kris Pearn's advice on working faster. (Draw faster at 70%, and eventually you'll adjust so that you can work at 100% at the new speed.) My own take is to draw the portrait on one breath. This way, I can be sure that I'm not taking too long. 

My goal with these sketches isn't to learn to draw at 100% using only a breath a piece. Instead I want my decisions on light/ dark mass, proportion, and defining characteristics to be more instinctual.