Well, the issue of using celeb picts is moot. Can't find any that don't feature big open mouth smiles. Gotta ask the authors of the prog if open mouth poses can be dealt with in the next version using inner lip curves. Meanwhile I will try it with custom curves and also try operating on mesh exported in a smile pose. I have not yet checked to see what happens to the teeth in FaceShop but from casual posing it seems not be a problem.