Clean up, spend the rest of the day having fun. At the end of the day, check the oven, see where cracks have developed in the plaster. Wash up again, go to bed. Next morning, make a fire inside the oven, using small kindling to start with, and gradually building up to medium sized stuff. Sometimes you will see steam rising through small holes or fissures.
Same remedy applies.
Once the clay is cooked hard and has lost its lake-bottom odor, you are ready to cook. Actually, we never cooked the same day we baked the oven. It seems to me we started cooking the next morning, when the odor had completely disappeared. Oh yes, the door. Well, you need an opening in one end to get stuff in and out.