I've added the third highlight of No. 3 onto the cheekbones, down the front edge of the nose, and on the chin. You can go one more level lighter if you want; this extra level would be good to represent a character out in the sun, sunlight glistening off your sweaty hero...well, I guess heroes don't sweat. But you get the point.
I have also added just a little more highlight on the wrinkles of the pants with No. 4.