There is a plugin called Shine Off by imadio software that will help get rid of skin shine. It works with Photoshop 7 or later, Photoshop Elements 2 or later, and PaintShop Pro 7 or later. There is a trial version to test it out.

ShineOff Plugin

As far as creating bump maps there are several videos on youtube for how to generate skin details in ZBrush (Mudbox or other sculpting methods would be similar). To get the detail that Emily has you need high resolution skin displacement maps (the best are from texturing XYZ but they are pricey if you want to use them commercially).