Nice little piece, great amount of detail. Perhaps make the chipped bits lighter than the undamaged parts. Dirt and dust builds up on concrete, the chipped parts would reveal the fresh concrete underneath. You might also have to have to decide how old each piece damage is, making some lighter and some darker :D
It's looking good - few notes though - - wear and tear is a bit inconsistent. You've done a great job showing model wear and tear with chunks missing and exposed rebarb etc however the texture is very clean. Think about adding additional grime and dirt as well some build up at the base to better ground it when placed in an…
Awesome model, very pro. Quick paintover for crits: Really depends how old you want it to be though. I was asuming it had been broken a while based on the rusty metal. If its only been through battle recently I would make the rebar more shiny and metallic where it has been exposed and scratched up, and also as said already…