The book I'm using suggests creating clusters to mold areas of the face into particular expressions. I've found clusters only get so much accuracy, even with the weight values carefully adjusted, so I went through and tweaked the vertices myself to get an exact result.
But as you might have guessed, once I did this the facial textures no longer matched the geometry quite right. Is there a simpler or at least more reliable way to mold expressions without severely distorting the CV map?
Would appreciate any advice!