Drawing people, especially people that I know well and who are not holding frozen still, is a most interesting challenge. I'm trying to discern the minimum number of marks that will give sufficient information.
I stopped after a few pen strokes on the upper left because that was all that seemed necessary. Nothing kills a drawing like overworking it. I always remember my first art school drawing teacher's constant exhortation: ' If the nose is giving you trouble, work on something else; never attack a problem directly; change the environment and the problem will solve itself.' To which he would add: 'And that is true in all of life.'