To be more specific…it depends on the type of ruin you are making. So check your reference and try to recreate it. From what I can see in the screenshot, the bricks in your reference have much smoother edges than this and a very irregular shape. The mortar that binds them togetger is almost completely hidden in the shadow, probalby because it has fallen off.
Also I heard about some addon for brickwalls. I dont remember the name but im sure you can find it or something similar. You can use that to place the bricks in a pattern and then go over the whole thing and add damage by hand. Or it is quite possible that there is somo addon or tool for that too 😀
