Place dough in a medium size bowl, cover it with a damp towel, plastic wrap, or a homemade bowl cover, and let it rise for the first rise in a warm place (ideally around 75°F or 24°C) for about 8 hours or until it has roughly doubled in size. The time it takes for your dough to double in size depends on the temperature of your environment and the activity level of your starter. Generally, a warmer room will result in a shorter fermentation time.