To get a race approved, you must write an approval request. An example page is provided on the official Valikorlia wiki (which I hope I'm allowed to link to; I monitor the wiki pretty regularly, so nothing inappropriate should be found):
http://www.valikorlia.com/wiki/Race_Example_Page
This is a category of all the approved races on Valikorlia, though most of them aren't played. Bear in mind that express approval by Roleplaying Administrators may be required to roleplay a certain race:
http://www.valikorlia.com/wiki/Category:Races