I like the picture, but the scene is far too constrasty for me. I think it would have been better to wait for more favorable lighting. If you look you will notice that all your tones fall into a middle grey, you usually need a defined black and a defined space of white for the photo to look its best.
I really like the composition as others have noted, but I also think something can be done with the subjects. Assuming your subject is the couple. B&W is great for this shot. Any chance you can work with the printing to lighten the couple a little bit more? If you could lighten the woman in the picture I think it would be, overall, a very good picture.