These are cute!! The only thing that stands out to me is the white balance. It seems pretty cool in both photos and is making their skin look off, as well as the colours in their outfits. Having said that, the second picture is a great capture. I love her pose and the expression you caught.
#2 is working really good for me. #1 doesn't feel as high of quality as #2 but I don't know why. I think maybe its the expansive furry white background that feels a little boring in that capture. Good job though.
First of all, I'm struck by the totally cute little faces and expressions. What a catch! I agree with the whites though. Also maybe a little overexposed? Just slightly though. Try warming them up on a layer, and then tweeking the layer way back. That way you can bring some color back into them.
Wonderful catch though. Super cute!