tutorials

http://www.digitalcameraworld.com/2013/06/11/dramatic-lighting-how-to-create-stylish-on-trend-portraits-using-simple-photoshop-effects/

http://www.graphics.com/article-old/scott-kelbys-five-minute-photoshop-portrait-retouch/

http://exposureschool.com/dramatic-portraits-photoshop/

http://www.psdbox.com/tutorials/dramatic-portrait-retouch-tutorial