Seems out of focus in the areas that should be in focus. Looks as if you focused on the tail. A better DOF would put everything in good focus for you. The white spots in the water toward the bottom are very distracting to me. Possibly they are reflections from your lights. The reflection of the duck is kinda nice and could be improved if it stood out more. The tan piece in the background really takes a lot away from the photo also. I think if you would have just put the grapes in the water it would improve this shot. Also I would have cropped a little more off the right of the shot. You haven't put your edits or any comments in the "Photographer's Comments" section so I can't tell what edits you have already done. Overall you have done an ok job but this was a very hard challenge IMO with all the particulars involved in it.
I see you are new to DPC. Welcome and remember it is very helpful to read all the tutorials and to ask questions if you need assistance. The tutorials are very helpful. The one regarding DOF and how to get a longer DOF is here:
//www.dpchallenge.com/tutorial.php?TUTORIAL_ID=1