Check to see that your dough has at least doubled. If not, give it more time to rise.
Oil a rimmed baking sheet with the olive oil, spreading with your fingers or a pastry brush to cover the entire surface. Alternatively, you can also use a 13x9 inch pan for this (you'll get a slightly thicker final bread).
Remove dough from bowl with oiled hands and place on baking sheet, flipping to coat with olive oil. Use your fingers to gently stretch and flatten the dough just a little bit. You don't want to stretch it to fit the pan at this point - just let it rest for now.
Cover with an inverted sheet pan or well-oiled plastic wrap and let the dough rest at least 2 hours, or until doubled and bubbly. This may take a few hours depending on your sourdough starter and your room temperature. Your dough probably still won't fill the whole pan - don't worry about that!
Preheat oven to 425° F.
Use the fingers of both your hands to dimple the dough (as if you're planning the piano), pressing your fingers all the way to the sheet pan. Dimple entire surface of dough, stretching very gently as you go.
Arrange your edible flowers and herbs however you like. Press them into the dough as your decorate so they don't pop out as the bread rises in the oven!
Use a pastry brush to coat all your toppings with olive oil and brush a bit more onto the entire surface of the bread. Sprinkle with coarse sea salt, if desired.
Bake for 25-30 minutes, until bread is golden brown on the top and bottom. Allow to cool before slicing and eating.