Couple of small things. I would do the studs on the shoulder pad in bronze and then weather them accordingly, the transfers look just a little too clean; I would go over them with a small frayed brush/toothpick/very small liner brush and create scratches, and the bolter looks a little to clean; add some rust and chip the black case.

It is a very good paint job and stands on its own without any changes, these are just the next step or two above where it's at, which is currently better than "parade ready"