We have been on the current project for roughly 11 months and laid up more than 180 tons in a variety of functions. In the above image, the down hill wall end finally came to conclusion after I located the the cap stone after 4 months of searching and trying out multiple ideas. The wall is 4' tall at coping height, and 42" or so at the top of the cap stone. It is an interesting thing to collaborate with multiple trades and the home owner to realize a wall. Having to incorporate the address numbers into the wall to approved scale was difficult in locating an appropriate quoin stone to accommodate them, as well as fit both directions. I think the long flat cap nicely lets the eye locate the numbers as the coping stones are set back.

This is our proposal for our next dry stone retaining wall which we have recently started excavating.

It weaves two different walling systems together: a wedge wall and a random rubble/coursed dry stone wall.

it will be 4' tall by 60' long and incorporate a radius on the left side that winds up the hill with stiles protruding 24", and 10" or so off the ground until we get to the grade for the path that leads to another set of stairs to the house. This should be fun to build, and push the rules a bit here. 

Here is our far right granite boulder that is 9' long by 48" tall at left, and tapering to zero at right.