Can check out: HOW TO: Customize Characters
How to:
@YOU changes bodyColor into Body Color
@YOU changes eyebrows into Eyebrow Shape
@YOU changes eyebrowsColor into Eyebrow Color
@YOU changes hair into Hair Style
@YOU changes hairColor into Hair Color
@YOU changes eyes into Eye Shape
@YOU changes eyesColor into Eyes Color
@YOU changes face into Face Shape
@YOU changes nose into Nose Shape
@YOU changes mouth into Mouth Shape
@YOU changes mouthColor into Mouth Color
Choose one of them or a few of them or all of them to change in your script.