http://www.youtube.com/watch?v=ipmMaeCGey8&feature=player_embedded#at=327
You can watch the whole thing if you choose. The wood demo starts at 5:19 and resumes at 11:10. I tried it the other day on a figure base ship deck base. I really liked the results and it's super easy. I used Vallejo Ochre, MM Skin tone tint base - light and MM Wood mix and then MM wood with Burnt Umber oil.
(http://i182.photobucket.com/albums/x17/zky1812/070.jpg)
HTH