Sarah Louise is such a beautiful model. I like the composition althought the execution seems to be done rather quickly; it's a big job to isolate the central image from the background and it takes a lot of detailed work to discriminate the unwanted elements; in this collage it is very easy to see the parts that were not blurred/replaced. For example. look between the legs and her arms and body in the middle image, the contour of the leftmost image, and the bottom right corner of the rightmost portrait. The belly of the leftmost Sarah doesn't seem right, is her right hand there?
I know it's tough, look at "EEW" in my portfolio and you will see that I had a lot of trouble getting the background out of the way, I had problems setting up my lightning and casting out background shadows. I'm not 100% happy with my execution, but that moment cannot be created again.
I really like the composition and picture format; Sarah Louise will love to have it on her wall.