the technique with the most success i had was to model the area around the eyes first,then the nose separately as well as the mouth....when these are through i connect them all to form a mask..thn i make the ears..after that is thru i sculpt a oly sphere to make it like the shape of the head then dlete some polys and connecting them to form a head...delete some more from the bottom then extrude it...this will be the neck