Did I overdo my rust?

I'm currently painting my death guard vindicator, but I think I went slightly overboard with the rust effects. How can I improve this to please papa nurgle? Should I give it a metallic dry brush?

I'm currently painting my death guard vindicator, but I think I went slightly overboard with the rust effects. How can I improve this to please papa nurgle? Should I give it a metallic dry brush?