Ok, I have no idea if this is what you are looking for, but here's what I do:
1. Do my best to take a good picture in the best light I can find (I only say this because it's so important to start with as good a picture as possible)
2. Fix any obvious blemishes using Photoshop's spot healing brush
3. Run a home-brewed action I've fine-tuned over time and through experimentation. Paint in the smooth skin on the mask, then adjust opacity to my liking.
4. [Optional] If I need a little extra glow, I create a duplicate layer, gaussian blur it at 16-20px, brighten it with a slight curve bump, then set the layer mode to Overlay and opacity to 25% or lower.
Here's how it looks:

Here's the action I use in case you want to play with it:
Download actionA basic understanding of Photoshop masks is helpful. Be careful not to over-do the skin or glow ... no one wants to look like a mannequin ... or a glowing angel ... or - worse yet - a glowing mannequin-angel
This action is give as-is, no warranty expressed or implied, no refunds without a receipt, YMMV, IANAL, etc ...