As a taste of what to come, that's extremely cool!
My only concern is, and I don't want to be "that guy," but it looks unbelievably small at the moment. It's not realism I'm discussing here (that's boring
) but believability, I have a hard time believing that the space inside that building could be put to much good use.In your concept I imagined it expanding and widening backwards, though maybe you will frame the final scene so the rear of the building is cut off and that can be left to the imagination?