This is the posting from last week, which was meant to dovetail with your own scanscapes. Now that you've tried the process yourself, you can more aptly comment on other photo collages.
The two John's below began using photo collage in the 1930's. Read up, research, and look at images from both artists. How did their intentions differ? What was the desired effect of each? Which John is more interesting to you? Write a paragraph for each artist.
Adolf by John Heartfield
Self-portrait by John O'Rielly