Just an explanation as to what they are.  They are pieces of a Original. Usually the Original was merged 1-4 times or if it has a L and R side for scanning it to laptop then the same halves are merged in different ways.  Then that is where the cropping comes in.  If I see something eye catching or "cool" then I crop it out.  Then I merge them 1-32 times.  If it is really good then that merge even has it's own coolness to crop from too. I can be cropping 4 times removed from the original..... by then things are pixilated and yet still look cool.