Lovely moment captured Carl, taken from a perfect angle.
The WB looks a little warm to me, the image is quite 'yellow'. If it was late sun then fair enough but if it were mine I'd reduce the WB a bit. A little subtle sharpening also works wonders to my eyes.
Finally, I don't mind the black strip too much, although I see where BB is come from. However, I do think a bit more space on the left of the frame would help if you have it available just to take the eye away from being too close to the edge of the frame. The only problem might be if tat brings too much black space to the top left corner, but worth a try at least.
That said, it is a lovely shot, I'm not trying to be critical, just that I think there might be a bit more to squeeze out of it
Mike