I've always signed the mats of my fine arts prints below the lower right hand corner of the print, but I've been criticized by art fair judges that my prints would be much more collectable and valuable if my signature was actually on the print. I never have liked seeing handwriting on photos, expecially those on display as fine art. I suppose one could sign the print and then cover the signature with the mat. Signing on the reverse side is not an option, since I dry mount my prints. Any ideas?