hey its kinda funny lookin :-P
There should be some nice head modelling tutorials throughout the net but im not at al aware of wings' modeling capabilities.. Can you draw curves or extrude edges? and how does the welding option work? is it any good?
If you can extrude edges, pul vertices, and weld vertices, you should be able to make something work. Usually people start out with an eye socket, or mouth or nose or even just those parts seperately, then set out a basic head-shape, work on cheeks, lips, chin, etc.
Important to make a nice head is to use reference material! And the wire topology is important too. Just work on individual shapes first rather then the whole head as a total concept.

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