post process opinions

I am submitting these photos to a local amateur photography contest and I was wondering if anyone had any suggestions for post processing these images?

IMAGE LINK: http://www.flickr.com …/70374000@N08/7​051270803/

IMAGE LINK: http://www.flickr.com …/70374000@N08/7​051269781/

IMAGE LINK: http://www.flickr.com …/70374000@N08/6​905177812/

They're all underexposed. I think if you check the histograms, you'll see that the "hump" is way off to the left. Try a levels adjustment to bring up the midtones a bit. The middle one (of the periwinkles) is out of focus or is suffering from motion blur/camera shake, so I suspect it won't do well in a competition, regardless of what you do to it in post.

a bit underexposed, but nice shots

#1 may need the dead weed/leaf to be removed but I think the exposure is adequate. I like #3 also. Now #2 seems OOF/blurring.
#1&3 are good entries.
Dan

Thanks folks! I definitely need to look into some monitor calibration, I loaded the images up at the photo store and they looked pretty dark. I cant believe that I didn't realize the periwinkle was out of focus, it kills me because I spent a long time editing it. Anyways thanks for the pointers.