This is an interesting subject, but I feel you could have improved it with a change of composition. The stars are attractive so it would be nice to have them all completely in the frame but as it stands you actually don't have single complete one there. Also, some of the shot is out of focus, which doesn't really help here, a bit more DOF could have made it better.
Good idea. The wire is a little diestracting, maybe to have shot the star shaped soap in a pool of suds would have made the stars a bit more impactful.