the artist used a series of different photos to make the apple logo.
in this collage the artist only used layering and no fading or anything.

the artist has used a variety of different maps to form a face.
the artist has used layering, blending, folding and some cutting.

in this collage it looks like the artist as torn pieces of paper out of magazines and blended them together.

 michel keck has used variety of different techniques such as masking, ripping bits out of magazines and different textures.  also i like how he used the Everlast on the ear as Everlast manufacture boxing equipment and it is a boxer dog.