Today I had a direct query on how to make signatures for QU prints.
There is a Help section on the subject in QU under Functions - Copyright/Signatures.
However a few years ago I had some sample files which I uploaded to the old Yahoo group. I've resurrected these files and made them available on my Pbase gallery:
http://www.pbase.com/tjm04/qu_signatures
There is a file with some additional instructions and description plus 3 examples, 2 image files per signature.
You are free to download them.  Click on the thumbnail to see the full size image and make sure you select "original" under the image. Right click to "save image as" (Firefox)
Copy to the Signatures folder: C:\ProgramData\ddisoftware\Qimage\Signatures and try them out to see the various effects.
Terry

Hi,
I see you have been poking around. Most of that is now old stuff and some even not photographic!
Anyway, you are increasing my hit-count 
Terry