Okay, we are getting somewhere. Draw in more hair lines, stroking and curving the strands. The more lines, the more realistic it looks and then blend some more. If you find your blending tone is too dark, for example on Jasper's skin, take a tissue paper and rub some graphite off or gently erase off with your kneaded rubber eraser. Most of his face is done. Now start shading on his shirt collar with straighter lines... light to dark.