it really looks great so far, but your modeling in a high poly style with quads. there is nothing wrong with this style of modeling but for realtime stuff its gives you way more polys than you need. if you plan on a ruduction meathod of some sort this could be fine too. i suggest doing a poly count and seeing how may you got so far. here is a good tutorial that shows some good techniques for low poly humans


http://www.3dtotal.com/team/Tutorials/benmathis/benmathis_1.asp