I finished 10 varations of cinder block bricks. Honestly, I probably could have done with 6. But it’s never bad to have more variation.
I started placing them on a plane with a basic grid texture in zBrush’s 2.5D canvas, offsetting them with the tilde key while I go. Tomorrow I’m going to create the grout for the background (probably doing it all in Substance Designer) and play with the depth of each row, which are on their own layers.