What a beautiful job you have done. I too have been interested in landscape quilting. I have decided to start my first one this month for a friends birthday in late part of December. I told her I will probably have to give her an IOU.
I have been doing extensive research on landscape quilting and I agree Nancy Zieman's book and DVD is fantastic. Also, Joyce Becker saw similar work with embellishments thrown in. I like her style also. I found a great site www.IQuilt.com (sorry don't know how to make this a link) but this site offers online lessons at a very reasonable price and Joyce Becker has course on Landscape quilting ...$19.95 for Part A and B. The class length is 4 weeks for this amount. I think its worth looking into.
Keep up the good work...I very seldom post but felt I wanted to let you know what a Great Quilt you did.
Judy