Hey Ardeey, great work so far, love your gestures and your lines :), one day in the future we will no longer have to relay on the undo command.
Regrading your first proportion assignment that you submitted. I think the shoulder width using 3 cranium as reference that you have is still in an acceptable range.
Also good work on the longer figure studies, As for the last figure who is standing on her toes, her head seems to be a little too small, her torso a little to long resulting in that her lower left leg gets a little to small. but again good work, it is a little easier pointing those thing out than actually doing it yourself