The composition here is really good, so much so that the grape has become th natural POF and its a pity that its not sharp. One of the really tough things in shooting macro or close in of any sort is the depth of field. It's not easy to correct, but you got to work with the smallest aperture you possibly can Often means rigging the tripod.
I love the plum idea. I might've zoomed in, using really sharp focus and even doused a few drops of water on one of the plums. The leaves in the foreground are a bit distracting.