Thank you all for the wonderful comments. It's so nice to know that the effort is worthwhile!

Hi tuse. There is an introduction to mods for VF posted in the guides section and you may also find these posts helpful:
Getting Started with GIMP
Mod Tutorial for Paint Shop Pro

I have several extra projects in the works at the moment, but plan to do another guide with screenshots as soon as I can. In the meantime, feel free to post any questions you may have. I am always happy to help, as are most of the mod-makers.