Thanks for the kind words rclaw, my weathering is pretty staright forward and not too expensive. Heres the steps I used

1) A red oxide primer ( I used tremclad, which I think is the same as rustoleum in the states )
2) A Base coat using Tremclad grey ( which is very close to German grey, close enough for me anyways )
3) A wash using Ceramcoat burnt umber
4) A pin wash applied to recessed areas using ceramcoat charcoal
5 ) I fired up the airbrush and loaded it up with Polyscale "Aged concreate" and applied to the whole tank
6) After that had dried I put some Polyscale "Earth " and sprayed around the tracks and front fenders.
7) waited until the next day
8) applied some pastel chalks around the muzzle of the main gun
9) rubbed a pencil around raised edges to simulate where the paint has rubbed off

Other then paintes the tools thats about it.

- Jeremy