here's a progression i just did in literally 2 minutes to a Natasha Belle thumb.
first is the original photo, ryan from solorevenue is a very good editor/retoucher
second is the original photo with a medium intensity setting on Portraiture plugin
third is the Portraitured photo duplicated and contrast and saturation boosted in Photoshop
fourth is the third photo duplicated and using the dodge tool to increase highlights, most on her hair
