Not really seeing the dappled light I am afraid. The subject is in deep shadows and you have a really bright sky so my eye is all over the place. Leaving your model right where she is and taking your shot from the tree to the right likely would have captured better lighting. (I am guessing though)
The model is great. Dappled light is very subtle. Unfortunately there is nothing interesting happening in the sky. I wish you took a different angle to get rid of a grey and oerexposed sky. The idea is very good. I like the colours and very natural pose of the model. Just the sky...