Head modeling in sPatch
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6.
Duplicate and flip the model. Clear all unnecessary edges, then weld 
adjacent points.
7. 
Extrude first curve to make lips. Then add scaled sphere and extruded circle to make guid-object for making rest of head (only if you need).
8. 
Then extrude last curve to make whole model. This is maybe hardest part, if you want to make smooth surfaces. There is nothing which can help you in this phase, except sPatch interface (but seems that is greatest help). I doing this by hand (not by typing, just by hand). I start from profile view, trying to
get all curves as much smooth, then I doing same procedure in an-face view.
9.
Insert circle with eight points, scale it in one axis. Then weld points of model to points of circle. 
10.
Clear unnecessary edges, clear edges on the first curve of ear, then join ear to model.
 
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