Today I started to carve on all those little bricks.
I tried to get some crooked ones going. I do these with the ready mix concrete. The key to carving out the concrete is waiting a little bit for the concrete to get set up before you try to put your shapes in. If the concrete is too wet it will move around too much. If it's too dry it will make cracks.
I still have plenty of bricks to put on. Then I have to paint each little brick. I love using this concrete. It makes the houses very strong for shipping, yet it's not heavy.