From Another Point of View
If you don't trust Holden as a reliable narrator, how about if you tell your version of the story? YOU, of course, are NOT you. You will now retell some part of the Holden chronicles from the point of view of any one of the characters in the book, like Mr. Spencer, Phoebe, Stradlater, Ackley, Jane Gallagher, Sally Hayes, Mr. Antolini, etc. If you don't want to retell any one incident, then just tell me what you think of this Holden character.
In completing this assignment, try to imagine how your character would "talk" to the reader. In other words, don't make your character sound like Holden.
Any worthwhile and creative assignment of this type is going to be at least a FULL page long.