I've noticed that myself. I have a couple in the works, but not done yet. Though there a few small ones I've done in Painter, and walk thrus. Some day I'm going to add them to my own site, but for now:
Just a brief, visual walk through, not especially helpful:
[link]
Also a walkthrough, but with some text:
[link]
I did this one for Sirielle (using her image, so you might want her go ahead):
[link]
Painting an Aurora Borealis:
[link]
Dunno if you have these or not yet, but I've been storing them up:
Photoshop, layers:
[link]
Photoshop, coloring a pencil drawing:
[link]
General Photoshop tutorial:
[link]
Follow up to the last one, same artist:
[link]
Combo Painter/Photoshop tutorial:
[link]
A watercolor (non digital) tutorial:
[link]