So I just purchased a beautiful server for my dining room forgetting that the back is unfinished and it is not sitting against a wall it is in the middle of my room separating dining room from sitting room. Any way to decorate the back?

Add a skin of furniture grade veneer.

Upload one of the Pictures of it,then we can give you a better advice,Even I am planning since long to have an makeover of my Home furniture,so was looking for some furniture package deals,so that I can get furniture at lesser price.