Wow, this is beautiful and very well-composed. It would look good enough in a regular render-style, but then you've skillfully applied this watercolor effect to make it timeless and ethereal. Every element (posing, facial expressions, textures, color, background, composition, effects) is very well-done.
The only minor weakness here is that the man's left arm doesn't seem to be in an expected position necessary for his pose, but that is easily overlookable given how much more work would have been necessary to warp Vicky's dress, etc. I can see from the slightly raised spot over Vicky's thigh that you were at least aware of this issue, and I don't think I would have tried to further address it either.
Great job on this image!