#1 looks a little washed out. It could a little contrast boost and/or saturation boost to make the features pop a bit.
#2, there is quite a bit of blowout in several parts of the image. You may be able to help it a bit by playing with levels or the shadow/highlight filter. But not sure that I could save this one.
#3, same thing as #1. The image is very light, and it could use some contrast and slight saturation of colors, and also taken down a notch in levels or the shadow/highlight.
I have attached a sample of what #1 can look like with some editing. I increased the contrast a touch, increased the saturation a little, sharpened slightly with USM, and selectively dodged the eyes as well as a very slight sharpen on the eyes again. Let me know what you think. If you want specific numbers on the edit process, let me know.
Your pictures are not bad, but they could use a bit of post processing.
Once again you captured great mood and personalities!! I do love the edit job too. I often do that on the eyes too. I like to play around with the eyes with the gamma in the Exposure adjustment in CS2. I've never tried dodging in the eyes before- but it looks great.