Fits The Challenge- Yes
Composition- Very good
Background- Okay
My Opinion- The light ...the sun. It's always something! Here the sun is right on your boys face and arm causing it to look over exposed while the shadow on the left is making things too dark. I don't really know all you had to deal with as far as position. This is not a *bad* shot, just watch that sunlight. Keep shooting.
Nice content and nice angle. Light and shadow a little too strong for my tastes. Would be interesting re-taken at a different time of day when sunlight was less harsh.