#1 have already commented on in another thread
#2 dad could use some help with healing brush on his forehead. usually I would recommend not letting the cheek actually push in to the point that it becomes mishapen.
#3 & #4 The direction that the eyes are looking makes me wonder what she is looking at?
kinda distracting for me.
#5 maybe a nice variation would be head turned 3/4 with eyes toward camera, and a little smile no teeth.
All that being said, I like these, the lighting is good. and all sugestions given are to give other ideas, feel free to disregard. I am sure that the couple love what you have done for them.