i like it! :) just how we pictured him :)
The flow isn't too bad, but I'd try and avoid the kind of edges you have going diagonally up the cheek. Of course, there's so many different ways of doing head model topology, dependant on the facial expressions and animation you need. But as a quick example, keeping the cheek edges more horizontal like this : http://portfolio.ego-farms.com/head2_render.jpg is a lot better.
Oh, ok, thanks!