First gesture practice!!

Hiii! This is the first time that I´m using Line of Action website, so I started the first "class mode" lesson.
I´d like to read you feedback, thank you! :3

(also, I´m sorry for my bad english, it is not my first language)

https://drive.google.com/file/d/1eQb41xYeVouWfDC__oiOkrQQCmG7bjGX/view?usp=sharing

I think you did a great job and specifically the legs on the left most figure and arms on the right most figure show the realistic muscles of human anatomy. I think you could up those curves even more. It may be helpful to look for references with very muscular people to learn about how the muscles interact. I find that those curves and slopes are what provide more energy behind a pose. Great job for your very first lesson!

I think you are getting a general sense of proportions and it's good you're dividing the limbs and the body in sections.
Despite that I think your drawing seem a little two dimensionals and they lack the illusion of 3D.
To show that you can either draw solid shapes for the main masses of the body (chest, pelvis) or build a line hierarchy to show what is in the foreground and what is in the back.