Emily,
I live just outside of Warrenton, VA and love the idea of cob and other natural building!
While I don't know anyone personally, have you looked into Sigi Koko (
https://buildnaturally.com/)? She is based out of Maryland and does workshops on a building
project throughout PA, NY, MD, WV, and VA. While she focuses on
Straw bail, she has a
workshop for just about any part of natural build, including cob walls. I've done a couple workshops with her; she is a great teacher and a wonderful person! Her classes do tend to fill up very quickly (she only has a couple sections that aren't sold out) so you need to register early for the courses that interest you.
Outside of that, I too would love to lend a hand if anyone needs a hand with a build! Maybe we'll bump into each other someday Emily!
Billy