I envy your painting abilities. Wow. You were right not to mess with the blending on that last painting. It is simply beautiful the way you can see the brush strokes.
The anatomy is looking great. Only suggestion I would make is to perhaps try different ways of shading the body. There doesn't seem to be enough mid-tone (or rather, the transition between dark and light is not gradual enough in some places, and too gradual in others) in any of the anatomy sketches. Sometimes just experimenting with different shading techniques helps to find a balance between what looks good and what feels comfortable. Sorry if that doesn't quite make sense right now - it's way past my bedtime and I probably shouldn't be giving out advice in the first place.
Keep on drawing, you can definitely see the progress. Thanks for being an inspiration.