I see what you're trying to so here, and I like the idea. The shadow and the leaf contrast the background - but I think it could be better executed. The top of the pick has a green haze, and the overall background has a good bit of rainbow graining. I don't know what to suggest to rememdy the problem, but as it is I can't score it as highly as I would if those problems weren't there.
The only thing I dont like is that you cropped it right at the end of the leaf... maybe a bit of space between the tip and the frame would have looked better (IMO). Otherwise, nice DOF, good colour and nice work on the lighting... not too harsh here.