Ola Westcon
Well being this your first dio I have to say you definately are on a good trail here mate.
The glossyness of the figures have already been covered and the location of the guy with the Binoculars is too.
Do some good dusting of the wheels and the lower side of the PAK. Do the same with the lower parts of the legs of the figures. Looking at the shed I can imagine it was once quite a big structure but not much is left at the moment. Make sure you have enough Derbis lying around. Best is having A couple of those beams that are broken with jagged edges and pointy spikes on it. A good explosion would easily snap those logs like Matchsticks.
I agree with having some tools lying around in the shed itself, a broom or a shovel or something like that. Maybe even an old Cartwheel if you manage to find one.
There are 2 details of this diorama that I particularly like. The pile of chopped wood for a furnace or a stove and the dirt on the windowsil (or something like that I don`t know exactly how you call that lowest part of the window.)
Great job can`t wait to see more of your future work