Hope this is somewhat helpful, i guess it is more of a walk through than a tutorial, but at least i tried hahahha. Making this, i couldn't help think about how much more efficient livestream sessions are, since i will be doing commission art instead of comic work for a while i might be able to do some demos there.
Final Image and Layered PSD File below:
let me know if you have any questions and i'll do my best to answer~
happy painting ^^