Sometimes a crazy way to think can lead into and easier way of understanding

Sculpting the forehead and the skull are very important when sculpting.  Sometimes foreheads become way to short and to large.  When we start adding the hair something doesn't look right.  So we try adding more hair and that can actually throw your doll out of scale and it will look like she is all hair on top.  If the skull is to high along with the forehead we will try to fix it with pulling more hair around the sides and front of head.  This can also look odd too but if that's the look your wanting then by no means there's not a thing wrong with it.