Pre-heat your oven to 500-520 (whatever you feel more comfortable with) and place the pizza stone in the oven to warm with it. Place the pizza stone on the next height up from middle, so that it is a little closer to the top.
Having the pizza stone in the oven will make the bottom HOT and this will give you a nice crust, and it won't be soggy!
Once you are ready to make your pizzas, flour your hands and surface area WELL and gently shape the dough. You don't want to shape this dough with a rolling pin as that would ruin all those sourdough bubbles!
I tend to pinch about 1/2 to 1 inch around the edge (for the crust) as I gently guide the outside of the dough through my hands like a steering wheel when taking a corner (you know, the way they teach you to do it, not the ACTUAL way we do it!). This will help the dough stretch out. Make sure you do it quickly, as it will stretch pretty fast and you don't want it to rip.
Once I have a rough circle, I lay the dough on the floured Pizza Peel, or floured work surface, and continue to gently stretch it. Don't worry if it isn't a perfect shape, no one is judging you!
Make sure you pick something flat to put your dough on before adding toppings. I use a wooden pizza peel (see here PIZZA PEEL), but you can use a metal cookie sheet or something flat. You will need to gently shake the pizza off onto the pizza stone in the oven. If there are ledges, or you have to move the pizza once the toppings are on, you may as well have made a calzone! TIP: In between each step, make sure you give your pizza a shake to make sure it isn't sticking to whatever you have it on. By shaking it, you will just gently move the flour around underneath it. This will make it easier to get the pizza off into the oven without tearing it!
Add all your toppings and then gently shake the pizza little by little into the oven onto the stone. Lay the front of your baking sheet or peel against the stone and shake it little by little until it is all on the stone. (This all sounds very complicated, but once you do it a couple times, you will be a pro)
Bake the pizza for 8-12 minutes, depending on how crispy you like it. The crust should be a little browned (if not a little charred) on the bottom of the pizza when done. Use your judgement, only you know how you prefer your pizzas!
Serve immediately and enjoy!