Figure Drawing critique

https://ibb.co/nqmGsxJ9
https://ibb.co/b5pnPLVX
Thsese are 1 minute.
Im struggling to improve. A lot of the time i feel pretty panicked as time progresses through my exercises.
I may be looking at the reference too much. I know i place the head wrong. 
I'm wondering if i need to try studying proportions again? 
My study regimen is to look at reference, do lines to warm up, then i jump into one minute gestures. 
I watch tons of videos on it and have many books, but i feel stuck.

The gestures look really good here. Nice flow to the figures, plenty of action and expression.

I don't think head placement is a problem, more size. The head is consistently small in relation to the rest of the body. You can of course do this for effect, but if you're feeling nervous about what the head is doing, I'd suggest doing the good old 7-head measurement both horizontally and vertically and work with that a little while. You're really not far off at all here. Beyond that, you're well on your way to larger poses and longer timeframes, so take on the occasional 30 minute study and just dive into the detail once you get the basic lines down like you have.

Best of luck!

Thank you so much!! 
I didn't even think of the head size. I will be mindful of that going forwards. I decided to do 60 gestures a day, but i think doing some longer studies is what i need too