The whole process of DB'ing is to change all the things you did wrong up and during the affair.
If he wants you to be outgoing more, than do so...sexier, then buy more frilly clothes...change your lingerie into sexy bras and bikinis...wear teddy's under your work clothes.
If he likes your hair long and down...do it...add some of the highlights into the hair...change your look. Wear nail polish, makeup, perfume...change.
Do not set a time frame...he'll only be pressured and you'll be depressed if he doesn't meet the deadline.
NEVER...tell him you are changing...he must see this himself w/o you telling him...it will take a while for him to believe it.
As far as sex...rent 9 1/2 weeks...read books on how to be more sexual...subscribe to Cosmpolitan magazine...