1. Clarify your theme: Before you start writing, you need to clarify your theme. This will help you keep the consistency and coherence of your paper.

2. Make an outline: The outline is the framework of your thesis. It can help you organize your ideas and arguments and ensure that they are carried out in a logical order.

3. Use interlanguage: Interlanguage can help readers understand how your point of view has shifted from one point of view to another. For example, words like "however", "besides" and "therefore" can help your readers understand your argument.

4. Consistency: Make sure that your opinions, arguments and conclusions are consistent throughout the paper. If you put forward an idea in one paragraph and then put forward the opposite idea in another paragraph, it may confuse your readers.

5. Reread and revise: After completing the first draft, take the time to reread and revise your paper. Check whether there are any inconsistencies or ambiguities and make necessary modifications.

6. Ask for feedback: If possible, let others read your paper and provide feedback. They may find logical loopholes or coherence problems that you didn't notice.

7. Modify and edit: modify and edit according to the feedback received. Make sure your paper is correct in grammar, spelling and punctuation. These mistakes may destroy your logic and coherence.