Hello there!
Gestures proportion-wise look so far so good.
As for the critique part i'd like to put some emphasis on using less strokes as at the moment your lines look very "hairy". So if you planning to do another row of gestures try and get more control over your lines and use them wisely 
The less time you have on each gesture - lesser strokes there should be.
Another thing that I've noticed is that few of your gestures don't really have their weight distributed properly so it looks like they are losing their balance.
To watch out for it I can refer to Marc's class about gesture drawing and Line of action.
Line of action doesn't end where the pelvis is, It can go all the way down to the feet and it can help you to determine proper weight distribution.
Hope it helps
and keep up a good work and looking forward to see more from you 