Some sketches done from ref.
Emphasis on abstractions and proportions (about 20 minutes each, with corrections and mesurement for training.)
Refs from a oustanding PDF from a watts atelier quicksketches course :
https://www.wattsatelier.com/project/figure-phase-iii-quicksketch-fundamentals/
This courses seems to be one of the best thing on the net...
Done in sketchbook pro.