So the shadow... Its upside down, however if its a reflection its good but should be between the plane and camera. i.e. move it down farther and add some color. ;D Other then the shadow awesome edit 8-)
And after you take out the shadow, you can cut of 1/2 of the water, to bring the plane more into focus. The plane could be a bit bigger too. Anyway, the background needs more contrast, or the plane needs less, or both... Good job on the props! :)