When you first create a character, on your left is the Head Changer NPC, if you have the CoA Haks, you speak to this NPC (and after being booted and rejoining) you can select one of the many custom heads. You scroll through the list via the NPC dialogue and press 4. "Thank you" when you have chosen a desired head.
The numbers that correspond to the InGame head numbers, should be all correct, providing I haven't stuffed up >>
After a while, the heads will show up blank, there are a couple of others further in the list if you have the patience to get to them. As well as a few repeating ones._
HALF ORC MALE
HALF ORC FEMALE
Many thanks to ArabelsPhoenix for this wonderful resource!