Great model! Love the Hulkbuster suit.
A couple things…
There are some pretty obvious symmetrical damage details going on throughout the model. It’s cool to have damage in the same spots in places that might rub together, or hit things in a similar way. But it should stay asymmetrical, really adds to the feel of the model and gives your eye something more interesting to look at. Maybe even throw in a hulk fist dent or some dents on his wrists from hulks grabs. Just a thought.
Also, I think a different spec setting for the black metal bits would be good, a more subdued, diffused primer look. Might suit this particular version of Ironman. Maybe you already had that planned…
At any rate it’s a great model, good work!
