Sometimes a blown area works. I think this may be a good example. Clearly you have found a topic you like to shoot (barns) and your skill from repeatedly shooting the same subject is showing through. The horizon is tilted, which is easily fixed. Sometimes the shot is on a hill so the image is level, but the horizon is tilted anyway. I will usually look to see if a falsely levelled horizon works. In this case I would have keyed on one of the edges of the building and made it vertical. Anyway, the centered nature of the highlight works because it's balanced on both sides by the structures. Centering the area of interest (or at least where the eye is drawn since the blown area isn't necessarily "interesting") works well when you can provide symmetry. This picture was custom made for a creche to be placed in the middle. I bet that's exactly what you were thinking too... ;)
This is an absolutely breathtaking shot. I love it... very simple and ethereal. My only nitpick would be that the buildings appear to be leaning slightly to the left... I think a slight rotation, and cropping out the rocks in the foreground, would make this pic even better.