Ola Robert
Well it seems you have made something nice of this vehicle...... If it is the Academy (Ex Tamiya) kit then I have built this one too years ago.
There is as already mentioned a seam on the Coaxial machinegun in the gunmantlet and the Machine guns should be drilled out and next to that it should be gunmetal... (the part of the Coax gun that sticks out next to the main gun.)
Also you should not blacken the barrel too much.... A Discoloration (darker) is mostly enough. The gun is the Tanks life and the crew would make that the gun got cleaned every time they had a chance for it. You don`t want a failing or bad working gun on the Battlefield.
I love your camo work which is very well executed and the Dusting of the vehicle is very nice. I also like the rusty Exhaust. You could blacken the end of the exhaust as result of the smoke coming out of it.
I for one am not too fond of the chips. I think they are too big and they look a bit painted on. What I do like about them is the fact that they are quite random and mostly well placed. Things like the scratches on the Schurzen is a very common type of chipping/scratching that vehicles in those days were picking up. These vehicles were not running around long enough to get that badly chipped
Further a very good job on this vehicle can`t wait for pics of the crew and the groundworks