It was pretty recent that I've given this advice to someone else, so I will say it again for you in this case.
You have to be careful with filters and plugins. Some can give great effects if used cautiously and some can completely ruin an image by taking away the details. I'm afraid yours falls in the later category. It took away the dress details and facial features for the model on the right and it made the left one look overexposed. It's best if you blend your stocks together until you feel your work is complete, then merge everything together and make a duplicate layer of your work you can apply any plugins or filters to. If the result is a bit too much, you can simply lower the layer opacity while having the original behind it.
The butterfly is also a little large compared to natural proportions, but since it's a fantasy work, that might have been intentional.