no worry, your portraits are fine
just the models

#1 ,although there's some details loss on her hair n face when you trying to recover the mid. anyway i still like it

#2, #3, #4 photochop error. 

#2 Highlight abit strong, i know what effect you are trying to get, just that it's too strong for my liking. Flare effect could be tone down abit. 

#3 unbalance light ray.

#4 eyebrow need more shadow, and nose highlight need to be lowered.

my noob 2 cent