First rate shot and good job with that kind of tough contrast.
I agree with Nesster and Gary, cropping (square?) would tie the two images more closely together. If you really want to play around, here's a quick and dirty PS edit (this is rough, it badly needs to be blended but you get the idea) that moves the two images even closer... that may be too much for some tastes. Again, not better, just different.
FHPhotographer
