Morphing the face is fairly easy. Be sure to work on the HEAD only, (without the eyes or any other "loose" groups) then import the morphed face as a morph target into Poser.

Dr. Geep has a tutorial here that explains how morph targets work: http://www.drgeep.com/p4/mt/mt.htm

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.