How to improve your photo
Work on your posing. Have the bride arch a bit and add some S curve to her back. She is too stiff - straight up and down. Work on your hand posing for her bouquet. I would have her hold the bouquet loosely and pointing down, her arching back and bit and him leaning into her.
Again, you have a tough groom to work with. He does not seem comfortable in front of the camera. But guess what? That IS your problem if you are doing their wedding (I know you were doing friends shots) So in the future, really work on talking with them, getting them to smile, touch each other, laugh etc.
He needs to do something with that left arm that is just danging at his side. Have him wrap is around her waist, hold her hand like they are dancing or touch her face. His expression looks forced. It is too bad, because she looks engaged with him, but he just kind of standing there. Add some movement to your posing and keep up great work and thank you!