I really like the perspective of this shot. The DoF gives just enough detail of the water to keep it interesting, but not so much that it distracts from the duck. Only flaw I see is that there is a halo around the duck that was probably created during post processing.
Nicely composed and captured ... with good detail. There's a bit of residual evidence that the water portion has been photoshopped (likely darkened) as witnessed in the haloing around the duck and unaltered areas along the grassy horizon, especially lower right. I only call attention to these details as feedback (not to be critical) because I believe digital enhancement should be seemless ... and this one is close. If I didn't spend so much time waist-deep in PS myself, I'd probably not be so particular. ;-) *7*