Your gestures already show that you’re thinking about flow, which is good. With FORCE, the leading edge isn’t a separate step so much as the first directional idea you commit to before adding structure. You can keep proportions by lightly marking where the torso and hips sit without drawing them fully. Are there specific poses where the limbs throw you off most?
https://drive.google.com/drive/folders/1eoYBP3CYmUm0cutYJbYPkR6LMXr7Q83u?usp=drive_link slope