NFL: You've just been hired as your team's new Head Coach. You Have 4 years to rebuild or continue winning. What do you do?

Like the title says, the owner of your favorite team has just hired you to be the new HC. You get a 4 year contract. If your a fan of a bad team, how are you going to rebuild it. How do you draft, what scheme do you run, etc. If your a fan of a good team, how are you going to keep winning? via /r/nfl http://www.reddit.com/r/nfl/comments/2i6pbn/youve_just_been_hired_as_your_teams_new_head/