glad to see this thread starting to take off.......
heres another tip:
when smoothing out wrinkles or other skin perfections try this:
duplicate the layer, then do a heavy gaussian blur (at least 3.5 pixels)
then add a layer mask
with your paint bucket tool put black over the mask (this will make the blur'd layer invisible)
then, with a small soft edge brush with the opacity at about 5-10%, use the color
white to slowly go over the wrinkles......you will see them start to blend.....take your time
do it until your satisfied
itz not perfect, but it does work if you take your time