C&C per req:
1. A little too close with too little DoF I think. The point of focus appears to be on the right cheek, leaving the eyes rather soft. When photographing people, unless there is a strong compositional reason not to, it's generally best to have them look toward the camera. Not necessarily straight down the lens, but at least in the photographer's direction. Also note the hard shadows behind caused by the use of flash.
2. This one has a lot of potential, and I don't mind the selective colouration at all, BUT the child is lost in the scene. Given the excellent leading lines produced by the pathway, I think this image could have been much stronger had you shot from a much lower position and tightend the composition to exclude the houses and other distractions in the background.
3. Again, potential for a nice scene here. A couple of thoughts: (1) Don't forget to level your images. The pond water is running out image right and all over my desk. (2) The blown sky and reflections on the water are less than ideal. There are a couple of ways you could go, using a polarizer and graduated neutral density filters to even out the exposure, creating an HDR image to even out the exposure, or metering for the sky and rendering the children as silhouettes only. Lastly, too much DoF; the background adds little to the image, a tighter crop and less DoF would have helped.
Just my $00.02 worth - your mileage may vary.
~John