About 45 minutes - 1 hour before baking, place your dutch oven with the lid on, inside the oven to preheat at 500 degrees farheinheight.
Turn your dough out onto a piece of parchment paper and gently tuck any stray edges under the boule. Working as quickly as possible, take out your dutch oven, score the dough with at least one deep score, and place dough inside the dutch oven by lifting up with the parchment paper. Add a couple of ice cubes under the parchment paper to create some steam to help it rise.
The dough may collapse while preparing and scoring. If this bothers you, I recommend getting a rectangular dutch oven and banneton basket, which will help it rise up more. Without a strong gluten structure, this is likely to happen a little, but it still yields a beautiful, rustic loaf of bread.