First studio session - Opinions please

Today I used some studio kit for the first time. I'd be pleased to hear some opinions.

1.

the first isnt really bad but the rest look mostly bland.

Are these models posing for some anger-management classes?
Light is too harsh in #1 (shadows too dark) - need some fill light.
#2 hot on her forehead - you need some rim-light in this one too.
#3 need rim-light & fill - where are her eyes?
#4 not liking the pose - go ahead and have them cheek-to-cheek and smiling
#5 focus on the eyes and not the pimples - open the crop, it's too tight, show her lips.

edit: Keep at it - you are lucky to have two lovely models to work with.

Thanks.

I was at a studio course where the two models were 'provided'. I wasn't very good at directing!

Thanks for comments.

1)
-Has uneven background light.
-Lacks catch light in the eyes.
-Lacks depth

2)
-Better than #1
-Cropped off the elbow which is a no no

3)
-Cant see the eyes. The model looks like a zombie.