Worthwhile literary analysis begins with a careful study of what a literary work is. It is a process of seeking to understand how a work functions in relationship to its readers. Authors of books for children sufficiently advanced in their reading skills may use sophisticated plotting techniques, such as flashbacks, starting in the middle of the story, or multiple plots. Be careful in determining whether or not a work is original. You may respond to something as original because it is the first time you have encountered it in a book when experience with many books would reveal that it is not at all original, but rather common in children's literature.
Style is original.
This is the hallmark of all great literature. Words are used or combined in a unique way to express the mood of a scene or the personality of a character or narrator. Language, character, setting, event, or some combination results in genuine humor. The plot is unified. There is a clear beginning, middle, and end which seem inevitable.