Essays / Hi I need some help writing a Chronicles of Narnia Essay [2]

Hi this is my thesis statement:

Throughout the series of The Chronicles of Narnia, C.S. Lewis uses allegories to symbolize Christianity with its main two elements: courage and faith. Christianity is tied to fantasy and imagination all through the series, which is a skillful way to influence children to be faithful, courageous and to believe in Christianity.

Could anyone please give me any ideas of what to write about?