Thanks, guys! Giacomo, the mud on the sides of the hull were created with Matt Varnish and MIG Pigments, and is very tough, after it's dried!

JM, for the paint chips, I used XF-61 Dark Green, I then applied a spot filter over the chips with Burnt Umber, and in other areas, Burnt Sienna oil paints! The Burnt Sienna can make the paint chips look like an actual red oxide primer, corrodin' beneath, with little effort!