For me first class execution.
I am little puzzled with the faces, looks like two weddings.
#1 Idea is great, but instead of second shot of newlywed pair I would rather have a close-up of a groom also looking at the center towards walking on the beach. That would give more spiritual sens to the collage.
#2 Her portrait is perfect, but because you squeezed the kiss (also very nice shot) in the corner, the compo is out of balance and both images work against each other. You shouldn't turn the attention away from such a beautiful portrait. Honestly.