My turn! I like this game 
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A very simmilar approach to Don's in terms of sharpening, lightening the background and cropping. The difference is I used the 'advanced skin softening' method from a PS book I have by Scott Kelby.
This involves copying two new layers with one set to darken and one to lighten with a big (40-60) gausian blur on each. You then blend those layers and delete out the non-skin bits. The result is to reduce the contrast over the skin, to give a very subtle glow and to smooth out inperfections. You set the opacity of this layer to get the amount of softening you want.
Great fun, thanks for starting this thread.
