Here's my take.
#1: I like the composition. The cake looks OOF. The roses and the glasses look more in focus. Also, there's some hefty purple fringing going on especially on the rose where it overlaps the cake.
#2: I think this is a good capture but her expression is not flattering at all. The flare on the right is too much.
#3: I would have put the groom in the middle. Him being on the left throws off the balance. WB is off.
#4: I think this is a decent shot. Could use a tinge warming up.
#5: Not sure I like the angle or the framing. Her foot is cut off and his leg is too. Lighting up top is very harsh.
#6: Too centered. WB is off. Looks a tinge soft. There's some funkiness happening on the edge of the dress on the right side.
#7: Decent shot, but it looks like a weird angle to be shooting a dip shot. His face might be a touch too hot.
#8: I think this is better than the other group shot. Better balance. Too bad about the tree behind the brides head, but I don't think that's a huge deal.
#9: I would crop much tighter. In fact, I would crop it landscape orientation. Looks a little soft and I would clone out the white/red dots in the background.
I think overall these are decent if not inconsistent. Lighting seems harsh on most of them. I think this is a good attempt for a first. Keep at it! 
