I'd work on composition. First thing I thought when I saw the first picture was "What the hell"
Then I saw the second one and thought, "Seriously"
I'm trying to find what was the point in taking these pictures....I don't even find 3 interesting at all. It might prove the rule of thirds or show a good example, otherwise......
1) As said, a headless kid holding a flower, nothing else I see from it. I go straight to the stain on his/her thumb
2) There's a flower in there? I see the head that fills almost all of the frame. If you're going to shoot a flower in someone's head, make sure it's not lost in the hair (make it a bigger flower)
3) It's a flower on wood....I dont' have anything to say about it.
4) Might be nice if it wasn't slanted. Actually, it it was straight and the walkway was offset to the left or right just a tad, it would be wonderful.
5) Nice shot of the flower and good use of rule of thirds but did you see the lady in the background BE AWARE OF YOUR SURROUNDING!!! If you can see something coming into frame, by the time you take the picture, that WILL be in the frame and will probably take away the original concept of the image.
Take this advice or leave it, but I have nothing to work with with these photos
~Michael~