Understanding the Assignment
Every assignment has its own unique purpose. The professor expresses this purpose in the language of the assignment/prompt/directions. It's your job to parse this language to satisfy the requirements of the assignment. The easiest way to derail your grade is to deviate from what the professor is asking you to do within an assignment.
(You can utilize some of the same materials from your annotation supplies here. Different color pens/pencils will help with parsing the language of an assignment.)