You can learn how to make molds here. http://www.chefrubber.com/learn.html
I'm pretty sure you can also buy face molds in the clay sculpting area of most crafts stores.
Directions for fairies cake (using molds):
(Has lovely extension/stringwork - but adaptable)
All links from www.sugarcraft.com
http://tinyurl.com/22cfqb
People, Dolls, Fairies and more molds:
http://tinyurl.com/yvgr6j
http://tinyurl.com/d4f3p
Help using Molds:
http://preview.tinyurl.com/2dc53y
Edited to add:
Soap molds for Chocolate:
(includes how to make silicone molds)
http://forum.cakecentral.com/cake-decorating-ftopict-141761-.html
HTH
Quote by @%username% on %date%
%body%