Really nice images... I've mentioned a few minor niggles
C&C per req:
1. Good exposure and composition in this one, however the background bothers me a little bit; You have a blown area, and then a much darker one. I think this would have been better with either a totally unrognizable background, or one which was soft, but recognizably child-oriented, say playground equipment.
2. Arrrghhhhhhhhhh!!!! You have trees growing out of your head! Other than that, it's a great image, especially with the eyes.
3. Another nice one, but I don't like the way your left arm shows, it has an amputated look.
4. This is a great image, but sufferes from blown highlights. Maybe a CPOL would have helped? (Don't forget to straighten in post!

)
Just my $00.02 worth - your milage may vary.
~John