Lighting - Great, but does give the fingers a shiny look. Putting a see-through cloth over this would have softened your light a bit. You also have alot of focus on the back of your hand and your third finger. Adjusting the lighting just a bit would have put more emphasis on the heart, or where your hands connect.
Subject - Very cute, good shot. The back pinky looks a litte squished and the knuckles are a bit wrinkled. Next time, curve your fingers a bit more around his hand to eliminate this.
Background - Excellent, I also love the soft fabric your hands are resting on!
Suggestions - maybe a little bit of softening. This is such a tender photo, but the the lines are a bit harsh. If you can use blending and softening (so you don't see the pores in the hand,etc) you would have a more romantic result.
Overall, a great creative photo that I would have scored a 6-7.