Well whatever you're doing with the lighting it looks beautiful! :D Ohey, that's only one more layer than I use XD
-Backlight (color dodge, varying/low opacity)
-Highlight (color dodge, 50% opacity)
-Bright highlight (linear dodge (add), 50%; only for highlights on bright colors, because the highlight layer doesn't work for them)
-Shading (multiply, 70%)
Base Color and markings

I'm really loving where this is going so I'd hate for you to drop it completely, so work on it at your own pace C: