This is a great tip. It's useful to have an alternative to the built-in red eye removal. The general approach used here also helps one understand the principles NX uses and how to get more out of it.
Thanks for this and the other tutorials about NX. Besides Jason Odell's e-book and the Nikon tips, this seems to be the only source of this kind of information. And the others don't discuss high pass sharpening, so this tutorial is really useful. Maybe some time you could elaborate on the Blending aspect? I've followed your steps on an image of my own and they certainly work, but I don't quite understand the blending part.