This rock is huge, it is about 20" long. My neighbour took it and placed it beside his garden pond and now he won't give it back. :-(
I've added self-drying modelling clay to some of the rocks. The walkway and wharf on the above rock and the roofs, chimneys, door & window frames on some of the others. The clay sticks with no other glue and dries hard and fast. It is super for smoothing out an akward space.
I started to make bases for some of the rocks because of their odd shapes so they could stand properly. I used mortar mix cement for this for a nice smooth finish.
The clay held up perfectly in our cold weather. I painted the rocks with regular craft paint but I put a coat of epoxy finish after (It may be overkill I don't know, but I wanted them to last).
You cannot see the shiny finish of the eposy finish because I took the pictures before I put it on as the pictures had to much glare when I took it after.