I made a quick tutorial to show you how to make a multi-pass rendering with zbrush and photoshop. Thanks to stumpf and Erklaerbar for sharing your materials.
You can download RS_GreenClay [here](http://www.zbrushcentral.com/zbc/showpost.php?p=387852&postcount=57).
The original OK set 15 can be found [here](http://www.zbrushcentral.com/zbc/showpost.php?p=377613&postcount=37) and the modified one [here](http://www.zbrushcentral.com/zbc/attachment.php?attachmentid=73589).
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