This is a pretty good start for your gesture classes. :) Do you have any 30 and 60 second gestures to share too?
To get better at proportions, I think a good step between drawing the action lines and then the outline of the figure is to compartementalize the figure first. Right now, you have a loose action line going through the body with some joints drawn that don't really connect together how they should, and you build the figure around this. Each bodypart is its own shape, and it connects to other shapes in pretty specific ways. Your gestures don't show this process and it can hinder your progress to get proportions right.
A good example are mannequins, they have solid shapes like the ribcage and pelvis, but they're connected by the joint of the waist - the ribcage and pelvis are able to move separately from one another, and if you draw the underlying shapes and connect them with the joint, you'll be able to get the proportions between the two correct more easily with time and practice.
There's a really good article by Proko on the common gesture drawing mistakes that includes a bit about proportion and mannequinization that might help you!
You're on the right track for sure and I'm glad to see your progress between those two pieces. I hope you'll find this useful and can incorporate some of these techniques into your practice routine.