Find each clamp through the foliage and bend the pieces together. You can use a hammer if they can't be closed easily. If the wreath is not yet full, you can include more greenery to it.
Take the ribbon and wrap its ends around the frame a few inches from one another. Secure the ribbon to the frame by stapling the ends together. Adjust the length, tie a bow at the ends and you are all set to display the wreath on your front door.