How do you help the cockatiel egg hatch?

It depends. If you only have a girl cockatiel and it has lay-ed an egg it obviously has nothing inside it cause it hasn't done anything so u can just chuck that sort of egg out, but if u have a male and female cockatiel the best idea is to get a little bowl thing or a nest sorta thing and put either cotton balls or tissues in there and then make sure there is enough room for Ur cockatiel to sit on it and then wait till it hatches and yaaaaayyyy!!!!! you have a baby bird.