Below the class choices are the character customization options. These are fairly limited, but you can choose a skin color, face, hair color, facial hair style (piercings for female characters), and hair style that suit your preferences.

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These choices used to be fairly important, but with the introduction of
barber shops in capital cities, players can now change these features at will. So don’t sweat it if you can’t find a style that fits you exactly, you can always change it up later on.
The final hurdle in character creation is choosing a name. Hopefully you had something in mind already, but if not, there’s always the “Randomize” button located beneath the name field.
Press the “Accept” button in the lower right corner to continue. If your name has been taken already, the system will let you know and ask you to enter a new one. Keep trying until you get a suitable name that isn’t already taken, then press the “Accept” button in the lower right corner to continue.
Once your name has been accepted (finding a suitable one can be quite an achievement), you’ll be taken back to the character selection screen. Now you can simply select your new character, press the giant “Enter World” button located beneath his feet, and you’re on your way into the amazing world of Azeroth.