I know you had no control over it...but that girl's shirt...is horrible. I think you did a good job, but the boy seems underexposed a tad, and the girl...I don't like how the light is in the middle of her face.
I don't like the light on her face either.
She looks a little grown for a 12 year old but, where the clothing is concerned, they just happened to be at my place when I was shooting so, that's what I was dealt.
I'm not a portrait shooter so take all this with a grain of salt.
Personally, I like the light.
I agree about the 12 yrolds pose. Too much too young.
I'm not a fan on the processing on the second, but like it on the other two. It's nice and warm.
The only nit I really have is the shirt in the first. Not what he's wearing, only that it's got that big wrinkle in the front so that you can't really see what it says.
Otherwise, I think it's really nice, and I think they will be well pleased.