Draw the 13/03/2020
it is great that you paid attention to the structure and shapes creating the body, instead of details like shadows
I'd recommend for you to try to do a single line, instead of a broken line with many strokes. It may be hard now but then it goes natural.
This video may help: How to hold and control your pencil
Also use most of your time to make shorter drawings, maximum 5 minutes. Also repeating a pose, and trying it over and over on fast drawings works for me... because if i don't get the feel of the gesture, i try again and again.