Heh yes sorry it wan’t the most articulate of answers but looking at the latest image I think you don’t need it anyway, its looking brilliant already!
I’ll give it another bash at explaining my technique for what its worth:
Lay down a brush stroke, say a dark tone.
Lay down another stroke that is lighter thant the first and overlaps that one but the paint is set to 30-50% opacity or flow.
You should have three bands of colour now. Your original and the new one but in the middle will be a tone that is in between the two.
Alt click with your stylus (if you’re using an Intuos/Wacom/whatever) the tone you created in the middle.
Now lay down another stoke with this new mid tone again overlapping the last stroke…or part of it or the last two (heres where its up to you!)
You can get quick results doing this and end up with lots of little steps of shades this way.
…that was just as rubbish wan’t it? heheh You can’t say I didn’t try.
As for the cheeks, their contours don’t match in the way you have shaded them, its only minor but I would go for getting rid of that band of shade across the middle of the right (from the viewers POV) cheek or tone it down a bit. imho.
Really like it though, its looking great!