You may be able to find some instructions in the WIP forum. Also, there may be a few in this (Caricature) forum as well. Better yet - Buy a book - any by Harold Enlow, Tom Wolfe, Pete LeClair have lots of patterns and are easy to follow. There are many others that are good also.
Here's a link to the Fox Publishing books on caricature carving:
http://www.foxchapelpublishing.com/s...cfm?FullCat=35
The Caricature Carvers Showcase is an EXCELLENT book for patterns and finished carvings. You may not be able to get much instructional tips though.