There's no need for the "not good enough" comments. Especially given that your images were only up for three-ish hours. Give it at least a day, and then just 'bump' is good enough.
That aside, C&C per req:
1. The would have been better shot from a lower level, toward the subject rather than down onto her, however it looks like you may have been obscuring an ugly background, and if that's the case, good job.
2. Interesting approach to desaturation. Couple of issues; note the cropped right elbow. Try and avoid cropping little bits of limbs. Major crops which don't bisect a joint are usually fine. Also, look at your background; not sure that headstones are ideal for a wedding. Lastly, this image needs to be leveled.
3. Nice image, like the conversion, BUT what I get from this, the tones, the pose, and the way she seems downcast, holding her boquet like that is, "The wedding didn't work, I'm outta here". A good capture, just not sure if it's appropriate.
4. Way over-exposed. At least 1 full stop with blown highlights in the hair and veil, and precious little detail in the other white areas. Despite being able to see her fact, this isn't an overly flattering image.
Overall, they're not bad, however the first two are very noisy (the digital equivalent of film grain) which may be from excessive post-processing or from shooting an ISO higher than appropriate on your camera. Your EXIF data has been stipped, so I can't comment further there. As well, the first two are very mid-tone rich; that is: too grey. A good B&W has a little pure black, and a little pure white and the range inbetween.
Just my $00.02 worth - your milage may vary.
~John
