The source speficially got frustrated when failing to make the wood elf look young. It looked old no matter what. Doesn't seem too easy to manually adjust the look to make your charcater appear young.. :/
Sounds like he wasn't good at using the character creator. Maybe that's Beth's fault for not making it intuitive, but it seems pretty clear when you look at Gnoviere's post: adjusting laugh lines, wrinkles, and dirt is one way to make your character look older/younger.
An age slider would be easier, but it's not like it's not possible to alter the way age looks without one. Just takes more than one step.