Jim,
Looking very good so far. If this hasn't been mentioned by others in another thread somewhere, it's really good to have profile shots to compare to when working on a sculpt of a specific person. If you only have pictures taken from the front, even if you copy them exactly, sometimes it'll still look "off" because you don't have the angles and planes of the face quite right (and that's something you can determine from a side shot).
People told me that and I ignored it at first to be honest, but it turned out to be very true.
Francesca