For a fade I setup aiming everything left of the target, I then turn the club in hands right till it is facing the target where I want the ball to land. then I swing it like I would swing a normal shot.

For a draw, I setup and aim right of the target. I then turn the club left in my hands to face back to the target, I then swing it like a normal shot.

there are many other methods, it depends on personal preference and ability. I know people who just open or close their stances, I know others who swing differently to change the swing paths. I also know others who change the way they releash the ball.