Cryx Paint Scheme: Rusted Armor

Been thinking for awhile on what kind of paint scheme I want to paint my cryx army in. I still haven't settle on everything but I've known for awhile that I wanted to do a beat up rusty cryx. So, I've never done a chipped paint/rusty effect before and I always like to practice new techniques on test models. So this is the color scheme and my first attempt for how I'm looking at painting my jack's armor. Disregard the dragon head bits, just the center bluish/gray part. Thoughts?