I'd also work on ensuring that your subjects look like they have their eyes open. 3/4 of your subjects here are squinty. 2/4 look to me like their eyes are closed. Did you check your shots on scene to make sure all was well ?
This shot was one of the shots when they were goofing around a bit(the kids) the sun was also not in my favor. I am quite new to portrait and still have a lot to learn. I have no studio and do all my shooting outdoors so at times I have to use what mother nature has offered.
All the comments help me learn. Thanks for that.