Douga exercise
Douga ()in-betweening for anime production) exercise from Studio Bulldog/Mochoko's anime training kit (not sponsored, LOL).
You can get the training kit here to try it yourself: https://mochoko.gumroad.com/l/animation_training_pack?layout=profile
The original shot on the first column. The second column is the timesheet for the dough (in-between for anime production)