Dear Judson:
I've seen your work and sense a strong drive to move forward. The advice given on this forum is excellent but there is no substitute for a good instructor.
I assume you live in the Washington area? When I was your age (and just as passionate) I was advised to study with Danni Dawson, a fine artist and outstanding teacher. She comes across at times as a bit of a drill sergeant--but in a good way. I just checked and she still teaches at the Torpedo Factory in Alexandria:
http://www.theartleague.org/
Robert Liberace teaches there as well.
Best of luck and never get discouraged.