Here's a PSD file of a manip I did for a friend recently. Double click on the "cut out" layer's thumbnail to see the "blend if" slider position. Other than that, it's really pretty straight forward. One note, however... I have had to cut the size of this file WAY down so that I can get it below the 80mb limit. Having said this, the layer, "applied layer for sharpen" won't show very much influence. the cruxt of what it is for is a smart object to utilize 2 unsharp mask filters. The first of which has a high "amount" and low "radius" and the second which has a low "amount" and high "radius".
Leave a comment or message me if there are any questions that I can clarify for you.