Writing an essay about essay structure poses several challenges. First, the writer must discuss structural concepts like introductions and conclusions while demonstrating them in their own writing. They must also avoid making the prose too technical while providing insightful analysis, and maintain a reader-friendly tone. Additionally, the essay must advocate for the importance of structure and apply the discussed principles. Finally, the analysis must be adapted for different essay genres as each structure is unique to its topic and purpose. In conclusion, an essay on structure involves balancing discussion of theory with practical application, as well as navigating these challenges across diverse writing styles.