The right angles at the crenelations (I believe that's what those are) are good and you have a long enough run of them so that they could be the subject against the blue sky but the tree/bush in the FG distracts from the angles. - 5
Subject matter is boring. Composition is not interesting. You have the idea of getting the roofline. The shape are nice. More interesting in you zoom in a little bit more or getting the corner of the building. The vertical line of the side of the building would add a little something. Exposure is pretty good.
Remember it's a digital camera. Don't be afraid to take a lot of shots. Professional photographers take hundred or even thousands to get a few good shots.
nice image - a bit too much tree, it distracts from beautiful windows and overall image- but not much you could do about it. I might have cropped out the ladder. No need for it here
I dont see a single right angle....just kidding:) cropping out the pesky ladder would have made this more apealing to meand the tree distracts the eye.5