Here are some of Geneva's latest studies. Good stuff.
I have one criticism: The lines are too hard and clean and I don't totally feel the construction underneath. I would soften the lines and leave the construction lines to be sure I understood how the drawings are built, not just what the proportions are.
I like the finish on this older study of hers.
Remember that the goal of copying other artists' work is to eventually be able to make your own poses applying the same principles that underlie theirs. It's not to just be able to make a 2 dimensional imitation of a specific drawing.