One of my favorite things to do in
SL is to create avatars of different races.
These two are basically both Asian -- one is Southeast Asian, which I am (Thai), and she sort of resembles me (but I'm actually one of those Asians who could look like anything brown -- even Latina) and one is more obviously Chinese/Japanese.
I believe that looking "Asian" is a perfect marriage between the correct skin and shape. Remember that Asians generally have small, flat noses, a shallow bridge, and a small, full mouth.
I made these skins so I can't help you there, but I saw one at Redgrave that I liked -- "Hana".