i think that these are really expressive! i can definitely see what the model is doing through your capture of poses even when there are a lot of attempts to draw the line, but I suggest limiting to two or three lines per attempt to capture the actions since the number of lines in img2603 kinda distracts me from looking at the pose in general and I was spending a few secs trying to make out what the legs are doing.
I suggest that in your next studies you can start limiting extra lines and add some more contours? BUt honestly tho I think these are super great for one minute, captuing the line of actions and adding the limbs within that amount of time