Regarding the head ~ *hopefully this drawing will work* this is a generic head shape to make the kind of domed head (you can find it in pretty much any kind of pattern, so I'm not really giving away my secrets
) You can change the shape of the nose to suit whatever kind of face you like, so make it sharper and more prominent an angle if you want a defined nose, or smooth the curve if you want a gentler shape to the nose. The central piece is the long piece, that has a flat end on the bit that joins the nose, and the other end goes into a smooth point. You match the point of the nose (or wherever you like) to the centre of the flat end and sew all the way along until you reach the point at the other end
Does that help a little? Sorry I'm not too good at explaining things!