Disguise

You can use the Persuasion skill to hide your identity, and change your appearance. Your check result determines the effectiveness of the disguise. It is opposed by others’ Perception check results. Make one Persuasion check even if several people make Perception checks. If you don't draw any attention to yourself, others don't get to make Perception checks. If you come to the attention of people who are suspicious, they get to make a Perception check. (The GM can assume suspicious observers take 10 on their Perception checks if they have time to observe you.) The effectiveness of your disguise depends in part on how much you attempt to change your appearance.
DISGUISE MODIFIERS 	DISGUISE MODIFIERS
Disguise 	Modifier
Minor details only 	2 Bonuses
Appropriate uniform or costume 	1 Bonus
Disguised as different sex 	1 Penalty
Disguised as a different race 	1 Penalty
Disguised as different age category	1 Penalty
If you are impersonating a particular individual, those who know the subject automatically get to make Perception checks. Furthermore, they get 1 or more Bonuses on the check.
FAMILIARITY MODIFIERS	FAMILIARITY MODIFIERS
Familiarity 	Modifier
Passing Familarity 	1 Penalty
Recognizes on Sight 	0 Penalties
Friend or Associate 	1 Bonus
Close Friend 	2 Bonuses
Intimate 	3 Bonuses
Usually, an individual makes a Perception check to detect a disguise immediately upon meeting you and each hour thereafter. If you casually meet many different people, each for a short time, the GM checks once per day or hour, using an average Perception modifier for the group (assuming they take 10).
It takes 1 minute (10 rounds) and some appropriate materials to craft a disguise. Every additional step you move up the Time and Value Progression Table grants you an additional Bonus. So working on a disguise for for 5 minutes will grant you 1 Bonus, and working for 10 minutes will grant you 2 Bonuses, and so on.