Work through Checkpoints and practice exams varying your structure and you'll start to find something you're comfortable with.
Here's how I do it
Section A Questions 1 & 2 - start with a topic sentence that addresses the question, signpost each point 'firstly, secondly, thirdly' - I order all points chronologically and end with an analytical statement to lead to the next point.
Section A Question 3 + Section B Question 1- analyses of reps.
Question 3c/1c you're using factual knowledge and cause/effect, etc. to contextualise the representation and add your own knowledge to fully answer the question. Write a concise but thorough paragraph making constant references to the representation
Section B Question 2 - An essay. Like English - argument, introduction, contention, paragraphs, topic sentences, conclusion. Use evidence to support your argument like stats, quotes, etc. Structure by Political/Economic/Social or perhaps chronologically.
Hope that helps.