Fruit Still-Life

Total agreement with what Damon27 said.
I would also suggest that you make a more round bevel in the babana, it's to sharp this way and looks cut in plastic. Add some black marks on it, like on real bananas.
One classic error, I would say, is the "too much effect" in your reflection on the table. same thing for the water drops on the apple. The idea is really good but you abused of it.
About the grapes, I think a light transparency with different strengh at the edges and the center... Some natural dust on it would be fine too.
Many things were already said so I won't repeat them.
Except that like the others I like the composition.
Maybe you could add a glass of wine? Or a bottle? Why not both afterall?
just ideas...
Keep on the good word!