There are actually ready-made Photoshop actions for this (search for downloads). Personally, I was hoping for flow diagrams in mirror writing on how to device

There are actually ready-made Photoshop actions for this (search for downloads). Personally, I was hoping for flow diagrams in mirror writing on how to device an image editing software and a folio with some neat illustrative drawings about its intended use. (Oh, is this actually what the Voynich manuscript is all about?) ;-)