Arm Anatomy

I made this while studying arm anatomy, since modeling every part is the only way I can get it in my dumb head :D Tried to simplify shapes but turned out to be somewhere inbetween.

Resources
Books:
"Struttura Uomo Vol.1" by Lolli, Zochetta, Peretti [2017]
"The Artist's Guide to Human Anatomy" by Gottfried Bammes
"Anatomy for Sculptors" by Zarins, Kondrats
Apps:
Visible Body
3D Anatomy for Artists by Catfish studios.
Videos:
Proko's Youtube Videos

If you see a mistake, please let me know.