Selective focus does not work well when shooting oceans, large areas of sand, or in this case salt. I think you could of used some better lighting as well. I like the clarity though, and with some minor touchup and camera setting tweaks, you might have an interesting composition...
The dirt on the shaker, which could have been cleaned is a distraction to me.
More salt on the table would have helped. The fact that the reflection horizon splits the shaker top, is a strong element, and the interpertation is very original.