Nice work, I like the shaded figure (digital?). Looking at the first one I think you could try using simpler longer lines instead of a collection of short marks that follow the outilne of the figure. Maybe do studies where you limit yourself in terms on number of lines (S & C curves and maybe straigh lines also?)? Try to think the line before you commit to it on paper. Hope this makes sense!

I like the raw shading, not everything has to be clean. Good hatching too. Maybe use more dynamic poses, the one one the left looks a bit stiff. There are standing poses with much more movement in gesture. But I dont know, it could also be a good exercise to use stiff poses and give them movement with hatching and so on