To hang a Christmas wreath on a door, you'll need a few supplies. You'll need a wreath, a hook or nail to hang it on, and a step ladder if you can't reach the door frame. Start by finding a hook or nail that can hold the wreath's weight. Then, place the wreath over the hook or nail, and use the step ladder to reach up to the top of the door frame. Hang the wreath over the hook or nail, making sure it's level and secure. Finally, step back and admire your handiwork! Happy Holidays!