Those look nice! Something I think could help though is maybe try drawing a line of motion and figure out how the figure follows it. Even exercises like drawing a sinple line and then trying to figure out a pose that fits it can (in my experience) help figure out how a body can follow motion. Getting figures to feel like they have natural motion can be really hard, but I think you're along the right track!
Something else that might help is doing shorter timed drawings. The less time you have, the more you're forced to focus on the big shapes and general motion, which can be good for understanding flow.