Why not use Blanche Du Bois's entrance dialogue as part of your introduction? For, in a way, her lines describe her character development as so well-outline for you in the previous post.
They told me to take a street-car named Desire, and then transfer to one called Cemeteries and ride six blocks and get off at --Elysian Fields!
Having difficulty adjusting to adapt to her changing world in Belle Reve--Beautiful Dream--the plantation home becomes just that, a dream, and the aristocratic life from which she can satisfy her desires has switched to a dying dream (Cemeteries), ending on Elysian Fields, where the play takes place. Incidentally, in the sixth scene, Blanche does reach Elysian Fields--something resembling paradise--as she has life within her grasp in the tender and loving moments with Mitch.
With the framework of Blanche's opening dialogue and the excellent outline of Blanche's character above by akannan, you can set up a thesis of how Blanche is delusionary in each stop on her streetcar ride of life.
While we editors do not write essays, there are some helpful hints on essay writing at enotes. Please see the sites listed below: