My eye doctor constantly admonishes me to wear sunglasses when outdoors.
This photo is interesting because the sun seems to be behind them, yet they are still squinting, so it must be really bright!
This one needs more depth of field:
This one could stand a little fill flash to add catch lights but otherwise you nailed it!
This would be better with a little fill flash and a little wider view to get all of her in, but otherwise, pretty good:
As a collection of family photos to keep track of your children as they grow, I think they are good. There is some room for improvement but a quick peek at the front page here will show there are some who think they are professionals, yet they are not as good as you. Keep shooting.