How is The Chronicles of Narnia like a chrysalis?

When the Pevensie children enter Narnia, they are wide-eyed and innocent: innocent of the reality of evil, and innocent about who and what Aslan really is. By the end of the Chronicles, Peter, Edmund and Lucy have not only gained knowledge about Aslan, his sacrifice and his triumph over evil, but it is presumed that they have emerged into a whole new world where they recognise Aslan is really Christ, the one who offers eternal life. Clear "chrysalis" symbolism is also seen when Eustace Scrubb becomes a dragon in "The Voyage of the Dawn Treader". A most obnoxious and greedy character at the beginning of the book, he is literally transformed when Aslan painfully peels away layers and layers of Eustace's dragon scales and skin, until there is nothing but a small, naked, scared little boy who emerges, with a whole new understanding of himself and aslan.