ZBrushCentral

Rendering Head

Hi I’m new to zbrush been sulpting heads for the past month now and I’m trying to render realistic shadows over the sculpt, but when i render 1 side of the model gets black spots on it.
Heres a couple of rough sculpts i’ve done so far and you can see the spotted area on the neck of the right sculpt after i render. If any1 can help on what the render settings should be or any other tips that would help i would appreciate it.
Thanks

Attachments

ZbrushHeadSculpts.jpg

This might help.

http://www.zbrushcentral.com/showthread.php?t=95227&page=3&pp=15

http://www.zbrushcentral.com/showthread.php?t=95227&page=4&pp=15

http://www.zbrushcentral.com/showpost.php?p=780850&postcount=90

Thanks for that they helped.