Is this a candid shot or shots of your kids/kids you know?
I'm left wanting more. What are the two kids interested in and what is the third kid interested in? I find the image doesn't tell enough of a story to be an interesting candid.
Technically the shot is nice, nice exposure. Composition is ok, colours are nice. I would of opted with a smaller aperture, just a bit. Having the two front most kids mostly in focus and the back girl blurry makes the image seem unbalanced. Having them all in focus, or the first in focus and the second and third more noticably out of focus (DOF) would work.
I see this is also your first post, so welcome to the community. Hopefully you will take the time to introduce yourself and not just be a drive by poster.