Really good work here Logan. I don't think you need any more light, but as a teacher of mine once said, "If you remember nothing else about posing, remember: CHIN OUT and CHIN DOWN!" When posing someone like this, get them to lean forward just a bit. Not so you can notice it, but so that they're just ever so slightly out of vertical with their head closer to the camera than their waist is and have them drop their chin just a bit. Again, you don't want it to be noticeable, but what this does is mask loose skin under the chin & throat that everyone has.