nr 20 chin difference is 0.1mm forgot to write that
done with 50! 50 more to go
It's nice to see you focusing on the head shapes. I can definitely see some improvement, especially with the second to last upload.
The main thing that's throwing you off are the circles. Since your doing this traditionally, I would make a cross with a ruler and make sure both of the lines are the same distance. Then draw the circle over it making sure the sides, top and bottom are touching the tips of the cross.
Thank you! will start to do that from now on 
Well goddamn just finished 100 head prop drawings in a day oof I'm tired have been drawing for like 13 hours 
(with breaks lol probably was drawing for 8-9) started at 5 pm ended at 5 am yikes. Let me know if I need to do more head proportions drawing or if I'm ready to go for anatomy stuff
Hey You are quite diligent, wow
In case you want to return some day... maybe this one helps?
https://sketchfab.com/3d-models/loomis-head-d0b3f4aa633a44d8bda8cfe2f779f1f8
Thank you so much I will definitely use this!
I did my warmups! will do some anatomy exercises now. You can let me know if the warmups I'm doing are good or if I should do something else for warmups:)
I think those are good warm up exercises! Even if its just a warmup, pay attention to the perspecitve of your objects (especially the cylinder in that case) 
The lines you put on it dont match with the initial circle...
Cheers
