I agree with the above poster... here are just some of my opinions...
1. Nice idea and shot, but just a little too much space above them, it would have been better if you got a little more of the couple in the shot.
2. Couple seems OOF, and you seem to have very noticeable CA (I think that's what it is?) in this shot (not your fault, more the lens, but still affects the image).
3. Nice shot, but again, a little OOF.
4. Again nice shot, but a little OOF, and I would have liked it better without the angle personally maybe just my personal style though..
5. I wish he was doing something with the right arm as well, and it is just a little awkward with his eyes open I think, not very natural haha.
6. Nice ring shot, although I would prefer a shot of the ring not on the finger, or one farther away so that you can see a little more of the fingers/hand.
These are all just my opinions, I hope that you can just use some them for the future.
I am sure that the couple was happy though! Congrats on your first session, it only gets easier and more fun from here! 