I teach you ?? are serious ? I think you should teach me *3*!
It's simple, just leave the shiny sections, and then with a mechanical pencil, draw some lines inside them with varying pressure to create different shades. and after that with a soft 7B or 8B pencil shade over the beginning of them, this will give a soft gradient effect from darkest to lightest! ^^
Eh, well, I didn´t really asked for an advice, but thanks a lot ^_~ .. erm I sure hate a mechanical pencil .. >.o I know how to draw hair... or so I think xD.. but it never turns out to such a beautiful and realistic piece as yours, that´s what I´ve mean. :3 But thanks~