You asked for opinions, so I'll give mine. This is just my opinion, mind you.
You should tone down the cloud layer you use to weather the camo. It just makes it look splotchy. Well, if it was just applied in the field, it's not going to be splotchy. It would be weathered with stains, scuffs, and whatnot, but the color would be more consistent.
It's also hard to see exhaust stains against black, so I would suggest trying them with a shade of brown, or even light grey (darker paints react differently sometimes, it seems). It not 100% accurate, it helps to build the illusion better. Like tweaking the blending on your panel lines depending on what color you have under them, etc.
Definitely looks like an interesting skin!
P.S. Hrm.... They might have just had the white outline crosses....
EDIT: I've got a reference or two on 190A8s (profiles and decal sheets) showing just the late-style crosses, no black filling. One is from JG300 dated July 1944. Not concrete evidence, but supportive evidence.