well, it isn't just that the art in the background is there that bothers me. I think it is placed in the photo poorly, and in a way that accentuates its ability to distract. The art on the right side cuts through the groom in really strange ways. There's just a little bit of a corner of one piece sticking out of his shoulder and the edge of the top piece on that side is REALLY close to the side of his ear. In fact, you can see the bottom corner of it over his shoulder. If you're going to include it, you need to do it in a way that make sense and looks purposeful. Right now, it looks like it was an afterthought or something you didn't notice/consider.
Also, and I admit that this is a bit nit-picky, but if you get far enough to be really distracted by the art, there's a blank wall on the right side. I can see it in the photo, which just makes me think, "man, that wall doesn't have any art and totally could have been used". That may or may not be true, but that's how the photo reads to me.