Beautiful balanced picture! Your color and light choices really work well with the subject matter I do wish the wall behind them was a little less blank, or there was a little less showing? if you'd framed it down a bit, you could have avoided chopping off her feet and removed some of that white space. Beautiful photo though!
Forgive me if I'm over analizing, but it seems there is not only a sweetness but bitternesses, the younger girl's crusty curls, inpractically pretty dresses, the tulle cannot be a lovely place to rest one's head, it would be itchy no? But that is what makes the photo so artistic, like two cousins after a wedding.