Hi Manny,
I wanted to congratulate you on your dio. It has a strong composition, and like the way the tank seems to hang over the edges, emphasising the size of it. I also like how the camoflage on the tank blends with the base, showing why the crew chose to paint their vehicle like that. The mortar in the bricks made a huge improvement, well worth the effort. One thing I noticed is that the outside of the building was a little bare...often the exterior has brackets, drains, shutter hinges, mismatched paint, mismatched bricks all kinds of add ons giving it a sense of history and everyday civilian life...which makes its destruction even more tragic...it makes us think about where we live and how we would feel if we saw a tank outside our home. Even seemingly plain exteriors have a lot of small details, and I think in the future this will be something that will really add an extra little zing to your diorama buildings...check out what model railroaders do... they are amazing at depicting structures( and please know that this is not to take away the success of yours).
The pavers on the road look really good and capture those grey European streets. I would have like to see more debris, as it looksed a little arranged around the tank. I would have like to see the tank crushing/grinding its way over the rubble leaving dust/fine gravel in its path (another way to get across the sheer weight of such a vehicle)
I know that the interior of the building is not important in this dio, but in the future, I think that more details, burn shadows, debris would really add to it. Even a looted burned building is full of so much crap that you can hardly believe it was all in there.
Please take what I have said in a constructive way, you have no need to defend your choices, these are just some of my thoughts and may well be off the mark. Congrats you have a really strong well composed and executed diorama