You're doing pretty good in terms of mannequinization and that's helping a lot with keeping proportions alltogether! Althou, gesture is more about flowing with the volumes and how them interact with eachother. You're halfway there though, proportions are awesome, you could keep a little more of the focus on line, as simple as it can be: C, S or I. And remember, is about flow within volumes, not copying contours. Your work is awesome!
