You will find some recommendations in these previous discussions:

https://www.researchgate.net/post/What-are-the-ingredients-of-a-good-thesis/1

https://www.researchgate.net/post/How_to_structure_and_write_a_Good_PhD_Thesis/1

Thesis writing requires intellectual rigor, advanced research skills, and substantial expertise in an academic discipline. The first step should include the exploration of the thesis topic and field-related specificities, finding relevant and necessary resources and papers, as well as having a clear perspective on your original contributions to broader knowledge. It is crucial to outline key research questions, objectives, and a realistic timeline to achieve the aim of the paper. In terms of perfection, the thesis does not necessarily need to be perfect: perfection is a never-ending journey and sometimes can lead to overthinking, procrastination, or undervalued efforts. It's better to focus on research perspectives, contributions, insights into intellectual pursuits, and the positive impact of scholarship.