1. Apply in advance: If you know that you can't finish the paper within the prescribed revision period, you should apply to the tutor or the evaluation committee as soon as possible. So that they have enough time to consider your request.

2. Provide a reasonable reason: You need to provide a reasonable reason to explain why the modification period needs to be extended. This may be because you have encountered some unforeseen difficulties, or you are engaged in other research projects.

3. Make a detailed plan: You need to provide a detailed revised plan to explain how you plan to use the extra time. This may include the modifications you intend to complete and how you intend to allocate the extra time.

4. Keep in touch: During the whole process, you need to keep in touch with your tutor or the judging committee. If they have any questions or suggestions about your plan, you should reply as soon as possible.

5. Ensure quality: Although you may get extra time, you still need to ensure the quality of your paper. You should use this time to improve your paper instead of simply increasing the number of words.

6. Don't apply frequently: Frequent application for extending the revision period may leave a bad impression on the tutor or the review committee. Therefore, unless it is really necessary, this situation should be avoided as much as possible.

7. Formality and respect: You should maintain a formal and respectful attitude when applying for an extension of the amendment period. You should clearly express your requirements and thank them for their understanding and support.