School - Shadow & Lighting

Hey there lads!
I've been working on the shadow and lighting versions of my character/pose.

Well, it still needs work, but there is still one more to be done. I kept the second one (on the right) quite rough, so sorry for that.

Pros:
Values +
Direction of the light +
Form +

Cons:
Sketchy -

Coming up:
Detailed version of the pose.