The 1st and and last ones look the best to me.

The second one is framed too tightly for showing all three buildings. Not enough of any of them is in the shot and there is not enough sky showing.

I have the same problem with the third one, it's like you don't know if this is supposed to be a picture of the fire escape or the building.

Composition on the one with the flag is good but the sky is totally white. Use a polarizing filter to get some more contrast with the sky and maybe play with how you're enlarging it (or use photoshop) to get some more detail.

The 5th one I don't know what the hell that thing on the side is but it looks reasonably interesting. There should either be more of it in the frame and less sky, or use a wider lens and get more of the frame filled up with sky while showing more of the object, whatever it is.

I like the composition of the first and last ones the most, but you need to do something to make the sky show up more instead of just being empty white space. A polarizing filter would definitely help.

Man, I'm such a critic. :chuckles: