Almost Perfect
First off, I'd like to say I really love the grainy art style and filters you put in. The background and everything look simple and elegant. The lighting is similarly awesome. The looks in the eyes of both of the models is sweet and adds a remarkable mood to the entirety of it.
However, I can still point out some flaws: The creases in the elbows look unnatural and too straight, the male model's ear has too much of the outside showing while the crevice should have been moved more to the right, the girl's body seems to vanish halfway down her breasts, the male model's hair looks somewhat unnatural, and the female model's hand MIGHT have looked alright with four fingers, but the strange angle they're at is rather strange, plus her hand itself is so small I feel it needed the full five fingers. One last thing is that the male model's eyebrow has too sharp of an outline.
I still think this is an amazing piece of art, though, and it's in my favorites right now.