LCSW supervision/consultation questions

I an an LCSW with 15 years of experience in child welfare (court involved), maternal child early childhood, harm reduction, administrative, medical, and mental health. I am interested in moving into the world of providing individual and group supervision for LCSW license requirements, consultant work, possibly even court appointed mediator work.

Looking for advice/tips on:
-marketing myself especially early in process
-things you wish you knew when you started
-barriers
-how to make contract/consultation/mediator become a full time business

Ty in advance