Pam McKenzie and I have recently compiled a book of techniques and scroll prints made by Lynton McKenzie of his guns and knives. It is a wonderful study guide for understanding and seeing how to fill spaces with beautiful scroll that Lynton is so well known for. The techniques section is written by Lynton himself. For more details visit the page:
http://www.handgravers.com/Lynton-McKenzie-Book.htm
Steve