Im going to be looking at you Swan series, and hopefully provide some constructive critique.
Starting with this shot, - one of the most difficult shots you can try is a white Swan against a dark background, however, you have done extremely well with this. What tends to happen is the Swan can be so overexposed that you lose feather details, and you have retained most of that detail quite well here.
The image is reasonably sharp, due in some part to using f/5.6 (you should use Av mode most of the time with f/5.6 selected).
What is not attractive is that wall, which you cant control when shooting, but you can in post processing.
Ive loaded a mod with:
Bright tones in the feathers reduced to enhance detail; added sharpness to catch those water drops; cropped the shot to place the Swan on a third, taling space from the right, and adding black space at the top, then painting in the wall with black.
Hope you find this helpful. I used Photoshop CS4 for this, but you can do most of this with tool's available in Elements 7.