Should prolly show a positive (+) and negative (-) example of the trait/aptitude in the illustration. Aptitude descriptions will now be disclosed in an earlier section, but it still might be nice to have a tiny bit of contextual info on how the +/- affects the game. Don't want massive duplication of text but want to avoid flipping back and forth to cross reference constantly. Like a good instruction manual, the information you require should all be on the page for the task at hand (in this case creating a character).
The rules should be:
Easy to use when, where, and how you need it.
2) Based on sound learning principles
i.e. users actually learn from it, not just refer to it.
Keeps users willing to push forward to higher "levels"