1. The harsh shadows are tough. There really isn't any interest here. It's just... no story, no real draw into it.
2.That looks like the "I didn't do it... " face!
The thing is I really can't give you cc on these. They are snapshots and that makes them priceless and perfect. They aren't meant to be anything other than a mom or dad's snapshots of a child they love.
If you want to step up your snapshots-don't shoot in the harsh sun, look for open shade or an overcast day instead. Get down to your child's level and shoot them from there instead of down on them.