life drawing Pt.2

I feel that my newest Real life drawing lacked the detail I usally put in my work.I did not finish the ribcage.One thing I am impressed with is the facial features.
I used slight shading on the back and face.my next target is to try focus on ribcage and try and draw the curves on the bones. A fellow class mate gave me the iidea to draw shapes for the body and the work on the detail.

We were told to grade(so to speak) another person's work. I picked another class mates 

Drawing. I was impressed by the fact she had managed to draw all parts of the body , even the ribcage, which I would like to be able to do myself.