This shot communicates a lot of emotion through a melancholy colour scheme and a high key lighting technique showing a model with a somber facial expression. The use of a long exposure and a flash creates the illusion of multiple faces.
Self portrait ideas Mapping 2013 on Behance Use a process like this for "identity/self-concept" activity about skin color/shade/tone/palette. Put vertical photo strip of every child together on a couple images to make a collective face.
Korean artist Lee ho Ryon Lee's series "Overlapping Images" incorporates a double exposure technique typically used in photography. The remarkable thing about this body of work is that the images are, in fact, oil paintings.
Take a mug shot style photo. Rip out the eyes rip out the mouth rip it in half shred it into as many pieces as possible and collage them do the thing in the pin out the face and stick it back upside down
Reflections and refractions in water, again, it is interesting that you can see the original and the reflected portrait in the same image, the white space between them is interesting. The Last Doll Standing: Work by the late David Seidner