Too bad you didn't rotate it so that the top of the building was straight across not tilted, unless the building is leaning?! Cool photo though, I like your use of negative space to show there is nothing around.
The complicated border really detracts from this shot. it's difficult to tell what the actual color of the sky is when it changes at the border. there also seems to be a little too much blue in the shot itself; the bricks have a blueish tinge to them that I'm sure isn't there.