welllllllllll it's not too complicated, since it's photoshop there is no actual "blending" going on at all, it's just layers of various colours of various opacity right. it's all in how you apply lighter colours over top of darker ones and keep your brushes on lower opacity and controlling your pressure wisely.
Oooooh, now I get it! Controlling the opacity... It's it seems really dumb but I never thought about it. I use smudge with a special brush that I got from Darkeen.com working with greys and then I use gradient map for the colors. But I keep looking cos I find it very time taking, despite being very editable. Fantastic work, as always. Thank you for your time, Jeff!
haha well looking at ur stuff - looks like you've already got a good technique going on haha. Just do it whichever way you feel most comfortable. Though with my method, it's not much different to the cell shading u got going on, just fill in the darker tones first, then on a new layer softly add the mid-tones in the same shape you would already with cell shading, except rounder objects will have a softer edge etc.