Skill requirements should be in ranks instead of bonuses. Someone with a decent Charisma and 4 ranks in a skill at first level will be able to have +6 - +7. Add racial bonuses and a good Charisma score and you might not even need 4 ranks to begin with.

Skill Points
2 + Int modifier
This should say "per level." I'd rather get 2 + Intelligence modifier per level than just plain 2 + Intelligence modifier.

Does improved aura of courage round levels down with a minimum of 1 or does it round up?

More later.