As for the metal on brick, I do not have a reference. The original idea was cracked stucco on brick and then I was asked to do rusted metal on brick. Where the brick is showing the metal is supposed to be somehow peeled back and I'm not sure how to nail that. The brick is going to move as it's placement is in the wrong…
Im trying to understand what are the materials being defined here. Do you have reference for for this? It looks like a layer of metal covering bricks. Which is very interesting but ive never seen anything like it. Post up your reference so we can assist you better.