Butterflies

First of all I got to say that this is an amazing capturing image at first sight. The subtle tones and the bright red on the lips works really great.
But there are a few things that I think could be improved. I like that you decided to use the vertical format for this, it gives more dynamics to the composition, but the crop around the face is a bit too tight for my taste. Showing the chin and the front of her face would probably help the image to develop in a more natural way.
I'm also not a hundred percent sure about the color of the flowers. Altough the placement is so subtle and beautifull that creates a whole atmosphera on their own.
The whole concept and delicacy which you work with in this image is outstanding. The features of the model are nicely and softly picture here, creating a really nice and balanced image.