Very nice, it has a cool dreamy feel to it. I almost feel as though I've seen this shot before.

A tip: take your eraser tool set the size to around 10-15 and the opacity to about 20% and hit the edges of the cut out where you see all those white areas and slowly and carefully erase them out.

Those are usually the first give away in a composite.
Getting better and better with every shot. 8-)