Fritz: Nice job on the Panther....like the weathering. The figure is beautifully done -- love it. I just have a few comments (just an obervation, I may be wrong) .
1) Maybe you could lighten the muzzle (if it is not part of the camo). The muzzle is the bread and butter of tank commanders and they always see to it it is as clean as possible. Muzzles or cannons usually go black if black gun powder is used w/c is not anymore in use during those times.
2) The schuerze is supposed to be a thick metallic plat that acts as additional protection. It is not supposed to bend -- it could either be torn off but not bend. That is one of the reason why I scratchbuilt my own rather than use the plastic (if you are interested, I used the aluminum used for leche flan). The panther schuserzen is not similar to those used on tiger tanks...
3) You could also weather the road wheels especially the rim (before the rubber - they normally scratch against the tracks). You could use som pencil lead.
Overall, the tank is impressive...
PS
For rust, one can also use burnt sienna oil paint..
:-H