Local Lessons on Art Quilting:
I've been art quilting for 10+ yrs and have had the same issue. I show my quilts at the guild to get other people to know what I do. People have asked me to join their art group. When I moved 4 1/2 yrs ago, I lost my group and it's taken 3 1/2 yrs to reconnect. We get together every 2 months and someone teaches a technique. Each 2 mo we make a part of a quilt for someone in the group. I think they do a loose show n tell, but I've been late to the meetings, so missed it.
Another method is to attend any art workshops the guild offers and even volunteer for the program/workshop committee.
It does seem that there's very little locally. I've joined the fine arts group in the area. They've been very encouraging and even want me to do a demo at the Sept meeting. Taking art classes at the local community college is another source. Most artists are encouraging to be creative and think outside the box. They welcome art quilts. Right now I'm straddling the fence: art quilt/fine art.
The best lessons I've gotten are at 4-5 day retreats like Empty Spools;
www.emptyspoolsseminars.com in Asilmar, Ca on the Monterey Penninsula. Another is "Quilt Tahoe" at Zephir Point in Nevada. Since I live in Ca, I don't know much about other places in the States. I'll take 1/2 day classes at major Quilt Shows. That way I get a feel for the teacher and committing 4-5 days ($1200+) to a teacher. And if she's someone to invite to a local guild program.