An essay consists of 3 main sections: introduction, body, and conclusion. The introduction sets the foundation of your essay as it includes a hook, context, background information, and a thesis statement. Then, in body, you add the key points with evidence and examples. Basically, it is the section where you add your understanding and interpretation of your topic. Lastly, in conclusion, you summarize your whole essay and add a concluding line. Moreover, to ensure coherence in your essay, try adding transitional words and phrases. Also, you can take guidance from essay writers in London if you struggle with deciding in which section you should add the idea in your mind.