The texture map which is only half done, by the way, is done in photopaint 8 using layers the "mottled" part is on a separate layer and was done using corel texture maker ,that came with the program , to make a grayscale cellular like texture. Then I increased the contrast to get more of a vien like appearance. Then I just used it as a brush texture with it set to 100% after that it paints like a transparency map, whatever is in the black areas in the brush texture, paint, the white areas don't. I've spent the greatest part of the time for this on getting just the right effect and I'm glad you like it.