Take notes and don’t forget to note all necessary details for your bibliography. Sort your arguments by importance and create a structure for paragraphs.
This simple approach has demonstrated its efficiency many times.
We divided the whole writing process into five steps and wrote tips on each one of them. You have to think about all details of the paper and prepare all necessary facts.
And your goal is to support your point with strongest evidences, as well as to convince your readers, so they could understand, and accept your point. You need to make a research, estimate your audience and choose right strategy.
You also need to pay your attention to different viewpoints.