I'm not great at it but I try not to think about proportions too much when drawing gesture. The idea with gesture is that you're trying to capture the motion of the pose - it doesn't matter if it's anatomically accurate I try to find the overall "line of action of the pose," following the curvature of the spine through the legs from head to toe (Stan talked about this in the first gesture lesson). Once I get that, I try to find the flow of the shoulders through the limbs and pelvis through the legs You seem to be finding that overall line of action sometimes but not others. In drawings 7 and 8, I can clearly see a line flowing from the head to the legs along the curvature of the spine. I think you should keep doing that, trying to find that overall "line of action." Hope this helps, keep up the good work!