Peter;
Dude! Super nice kitty scene! Looks a lot like some Panthers in France in 1944 seen in pics - you have captured a lot of ambience and much of the "look" of a used Panther lived in by its crew. I really like it! GREAT job on almost everything and should go to a show.
There are a couple of fixes.
Those tracks... others have hit on it. You really need to settle those down. (But you know this and already plan to fix, so...

)
The junk hanging around - specifically that nice clean-looking bucket on the side. I think it detracts from your otherwise nicely-used and holistic kitty! Maybe make it dirty and used - buckets were for mixing camo paint and doing stuff. I KNOW my household buckets never survive any uses without becoming rather used-looking (the one exception being my nice, sterile, protected beer-bottling buckets!

You don't want those to ever become "used-looking"

).
And then there is what appears to be a jerry a molded-on rack sitting on the rear deck. Ugh. Cans lying around up there? Yes, of course. Cans in racks? Nooooo. If you plopped a nice plain can up there, it would make all nice!
Others have noted the relationship of tank and tracks to road surface... Panther was heavy - 45+ tons. He would dig down into any soft road. I would consider sinking his tracks down a little into the road - But maybe you could look at some pics of real Panthers and get a view on how they sat and decide from that?
Just suggestions, of course! It's a mighty fine build and dio, by me!
Just as a sort of idea-prompt; here's a pic of a bucket I hung on an old Tamiya Wirbelwind build. The bucket is actually a small brass PE item which came from a set of roll-your-own buckets with a wire bail. It is dented and tries to look like it was used to do the white-wash job on the tank...
Thanks for sharing your great job!
Bob