I like that you're emulating the way Proko does gestures. The only thing I want to point out is that in the second pose your drawing is more inclined than the reference, this results in an unbalanced pose. Try to draw a straight line to compare how inclined it should be, the chest is too low and the weight of the arms would make you fall. Another good trick to know how much to exaggerate a pose is by doing the pose yourself. Good luck :)

Great Work! I think in terms of “gesture” these drawings seem to capture the motion of the poses well. If I had to critique anything, perhaps give some more love to the rhythm present in the arms. Adding the S rhythm to the arms will make your gestures even better!