C&C per req:
1. A nice, casual portrait, however I'm not fond of the cropped left elbow; cropping limbs is fine if you need, but try and avoid doing it at joints or laterally (or in this case, both). The face seems a little over-smooth and soft; it's definitely focused, but it almost appears as if you've overdone some skin smothing technique.
2. Just a little too much going on here for my taste. The multiple exposure is a neat idea and the BMX bike is a good "vehicle" for this, but the background is way too cluttered and distracting, not to mentioned under-exposed.
3. I like the pose/composition of this, but not the selective colouring. For one the white roses don't stand out enough, and second, you want the coloured item in a selective colouration to be the main subject; I would submit that the bride and groom are more of the subject than the bouquet. Additionally, it's at least two stops under-exposed, a fact which isn't helped by the vignette.
Just my $00.02 worth - your mileage may vary.
~John