Writing a comparison essay requires careful consideration in several areas. First, the writer must select two topics that have enough similarities and differences to analyze. Then, they must structure the essay to highlight both the similarities and differences between topics. The writer also needs to thoroughly research both subjects to find relevant evidence to support their comparisons. Maintaining a clear flow between comparing points is also important. Finally, the writer should craft an effective thesis statement that encapsulates the purpose of the comparison. Overall, writing this type of essay demands strategic planning in topic selection, research, organization, and communication of ideas.