Here is some advice from the most recent examiners’ report:
The key word, ‘How’ usually features in good tasks, allowing candidates to engage with authorial craft. … The best responses came from candidates who were able to study sections of text closely and relate them convincingly to the whole.
So you want to find an aspect of the work that you find interesting, and make that the focus of your task: perhaps something prompted by the questions in your study guide. Then frame a question that asks about how Conrad explores or expresses that focus. Then find probably no more than two to four sections of the text that illustrate that aspect, and analyse them in depth.
Feel free to discuss your questions and approaches here.