This is a great photography! I really love the contrasts and I immideately saw the heart when I saw this picture in your gallery. This photo is a great capture, and I really, really like it. The trees' contrast is beautifully blended with the picture and the bright background.
I don't know how this image looked before it was taken into Photoshop, but I'm certainly sure that the levels and curves layers you used were a positive change for the photo.
I give you a 4 on originality because it has been done (tried) before, yes, but I give you better on the other ratings because you executed this idea (coincidence?) better than most others.
GREAT photo! Terrible title. Just sayin' haha... and that's not just me being a dick: I love the photo for all the reasons mentioned by others (I just didn't want to make you read that schmoozy shit again)... but "Heart in the Clouds" is incredible cliche. Don't be disheartened! You're an artist, clearly, as evidenced by this photo... just need to be as creative with the title as you were with the piece itself