Charcharadon - Moving Forward

So I've tried to move forwards a bit with these, not a big stuff but something at least. I've glossed all the tanks using Future Floor Polish pushed through my trusty cheapo airbrush.  i then stuck a burnt umber oil wash on one of the Rhino's to start the dirtying up process, I still need to track some Devlan Mud into the panel lines and a few other tricks but this is where I'm at.  I'm going to follow the Rhino through to the end as a test bed then, if it works, apply it to the other tanks in one giganto batch of doom.

Here's the quick photo's.