In this Arnold 5 tutorialArvid Schneider demonstrates his techniques of working with the new Arnold 5 AIStandardSurface Shader to setup a realistic skin shader within maya. Arnold comes pre-packaged with Maya so there’s no additional setup required and most importantly, you can follow his tutorial with the Digital Emily model from WikiHuman.

MtoA Source: https://www.youtube.com/watch?v=ss13J1emsvw

Emily Wikihuman: http://gl.ict.usc.edu/Research/DigitalEmily2/