Disclaimer: I’ve never done one. Look at quotes you find to be important and put them on the left page, and then put the co-responding commentary on the right hand page. Maybe section it off by chapter, and put literary elements at the back of every chapter as a review. Organize them however you feel appropriate. The point is to learn how to read critically. However, if it’s an assignment, the teacher may have very specific criteria for what he/she wants. The rubric for the assignment should obviously take precedence over my advice :P