I couldn’t even tell thatit had a roof, i thought it was a courtyard andi guess im not the only one. I don’t know what to say on how to improve it, but this is definitely a guideline. Explore a different angle. One thing that comes to mind is to orbit with the camera a little bit to the right, so it shows the side of the building, this way it will be easier to read the roof plane, when it has some reference (sidewall + extended floor in the background)