1) I have done a "a", "o", "u" in combo create a desired effect in singing. I find that the result is not as desired. A normal a, o, u should give only that blend shape that it has been designed for. However, I find it gives me what I did not do in blend shape.
One thing I have done is, I created blends for the head on scale 1,1,1 and applied the result on scale more thatn 1,1,1.
2) I find that changing the blend for eye brows (created with lattice) affects the blend in the mouth.
Am i doing it properly, if not where am I going wrong.