I use a variation on Evans approach. I duplicate the background layer and work with it. This is so I always have the background layer to fallback on if I need to.
I sharpen the copy and then duplicate it. I then blur this layer until it shows the a little more smoothness than I actuall want. I have a variety of ways to do the blurring and I choose the one that works for the image and the intended effect. It's different for men v women, dark v light skin, etc.
This is more complex than what Evan does, but
I blend the blurred layer with the underlying sharpened layer using the 'blend if ..' of the blend layer options which you can get to by right clicking on the blurred layer in the layers pallete. This gives me very good control of the blending by tonality. Like Evan, I use a layer mask to get even finer control of the blending.
When I have that the way I want it, I use the eraser tool to erase the eye area and any other areas that need to be sharp so the underlying layer comes through. This could be done with the layer mask too, the way Evan does. It's simply a matter of style.
I then collapse these layers and take care of any skin touch-up using whatever tool will do what I want. It varies. I do the touch-up at this point because the smoothness I have already created makes any of the other touch-ups blend much better. Done right, it's virtually undetectable.
The reason I sharpen the image first is because of the way sharpening works. It gives me a very clear idea of the amount and kind of blurring and blending I need to do and in blending, it makes the details come through the blending with the blurred layer while 'leaving' the broader, less defined, blemishes behind . The result is a very sharp image with smooth skin tones.
Between my approach and Evans, which are actually very similar, the better approach for you to try would be his. It should produce very good results for you and is much easier to learn and would be more practical. I work the way I do because there are other enhancements to an image I may want to do and I have setup the foundation for them this way.
I think the main things to learn is that dramatic changes can be created with a very light touch and knowing what you are going for. Most of the retouch I see is ham fisted. If you want to achieve the quality that seems to impress you, be prepared to work for it.
Vance