|Greetings from the Critique Club!
Dang, Marcel, I can see exactly what you had in mind, and I think this image is way underrated...I gave you an 8 on it. If this were a challenge for Windows, as opposed to Window Light, or even Architecture, this could have done really well. Very simple, dynamic comp with leading lines taking you up out of frame, to who knows where?
A suggestion: crop out the frames on the left, from the one with the flag on, and if you have time, add a person or two on the staircase and see how much stronger this image would be. Mark this location as one to use for future shoots!