I have something to add on the tutorial...
biggrin Not that I dont like your tutty, I love it, but I just have something a mite simpler.
Do steps 1-4, then lock your layer with the first Lock Icon: -which should look like a layer pic- Then, turn your Flow to 10 and then choose a highlight/shadow color.
Should come out, (like what I did) like this:

Angelic Sunrise/Moonlight (The Avi) only took me 5 min.