Anatomy sketches

You have a very good grasp of volume and shading. The reflected light between the shadow and the edge of her limbs looks excellent. I would suggest focusing on practicing hands and faces. Maybe playing with different line weights would make them easier to fit into the drawings?

Neat! I love these! The poses are great! One thing I notice is that you draw an actual line for the hairline, which makes it look a bit like a wig. I am far from perfect at drawing hair, but one thing that I have learned does a bit better is to draw a rough edge instead (for a cartoony look) or no edge at all for more realistic. I don't really know how to achieve the latter, though. Maybe it fades in? Just don't draw a line across the hair - each individual hair starts at the hairline and goes somewhere. You can simplify this with bigger 'locks' of hair, but try to avoid an actual line. Does that make sense? I'm not sure I'm articulating it at all well...