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.
David Hockney, Mother: another manipulated-photo work of art. Hockney is the originator of this technique. *LINK to Cubism*
Hopenhagen Portraits Spliced - The Inspiration Room