Smooth Skin done by PS

This is a tutorial photoshop that I took from http://www.tutorialwiz.com/ and I found it fairly interesting and useful. But it is kind of long, so I simplify it and make it shorter for you guys to read.

Step 1: Open any picture that you need to make the skin smoother and duplicate the layer.
Step 2: Change to the quick mask mode by clicking on the "Edit in Quick Mask Mode" button in the tool box.
Step 3: Select the Brush tool and set the brush size due to the size of your image.
Step 4: Press D to reset the color and then paint over the area you want to make smoother.



Step 5: Change to the "Standard Mode" in the tool box.
Step 6: Select -> Invert.
Step 7: Select -> Feather and set the size about 10px or a bit more.
Step 8: Filter -> Blur -> Gaussian Blur and set the radius to about 3 px.
Step 9: Filter -> Noise -> Add Noise and set the amount to 2.5%, Uniformed and Monochromatic.

Here is the original pic and the result.