Hello, I don't do GDL but the way I approach writing a legal essay is by having a structure first. I often think about what to write first before writing my content. I also found it important to not be merely descriptive and factual as legal essay writing requires a high degree of analysis. The more analytical and critical of the topic, the better. It is always good to play devil's advocate to boost your essay marks to show your critical thinking capabilities. As for the content, I can't comment in-depth as it depends on the subject area.