I know, even though you may know what you have learned, it really gives you a perspective on what you'd like to learn and still don't know. That queasy-feeling sometimes makes me a wanna-be techkno-phobe. Your tutorial is very clear, in fact it's where I learned how to do masks in PI. I got PI in order to do some very difficult photo restoration that even Photoshop 7 lacked the tools I needed to match the vision in my head. I did most of the job in PI. The client was very well-pleased. I'm currently building a site with some tutorials on what I learned in the process. May I put a link to your site for your tutorials?