As is it is overdone. If you really want to smooth the skin, then at least add a layer mask and add some noise to the face where you smoothed to give it some texture. I would also brighten the iris / eyes.
One way to determine if it is overdone is to ask yourself "what do I notice first when looking at the picture?" Your picture I am immediately drawn to the skin which should never be the focal point in a pic - either because it is bad skin or because it is processed and smoothed so much.