I like the way it looms. The relatively dark image helps with that looming impression. It might be a good idea to emphasize this, darken a bit more?
The blank sky could be nice, giving ambiguity to the scene, but then I think taking out the wires and roofline bottom right would be a good idea as charlie suggests. An alternate approach would be to wait for some more interesting cloud (or emphasize what's there more), and pull back very very slightly to put it in a little bit of context without losing the bigness, the looming-ness. You might also try getting lower and looking more up, to emphasize the looming-ness more with the angle of view.
It's 32 feet high, according to wikipedia.