Thanks all for the great compliments on my first project.
the stones vary from 1.5" to 3". about 4 stones we built up to 4". doing the window and door headers was a challenge. had to build just an inch, carve joints and scratch. then lay next inch on top. otherwise it peels off. the carving mix was quickcrete mortar with Tru-pac additive from Walt Tools.
Believe it or not, this is my first project. Nathan's videos were very inspirational. Don at Walt Tools was always available to supply material, tools, and most important, advice.