However, I can suggest some tips on how to create effective UPSC prelim MCQ videos and essays for MAINS-UPSC and PCS:

For UPSC prelim MCQ videos:

1. Keep the video short and to-the-point. UPSC aspirants have a lot of material to cover, and they may not have the patience for long videos.

2. Use visuals and animations to make the video engaging. For instance, you could use infographics, charts, and illustrations to explain complex concepts.

3. Structure the video logically. Divide the video into sections or modules, each covering a specific topic or theme.

4. Explain the concepts clearly and concisely. Use simple language and avoid jargon.

5. Use examples and case studies to illustrate the concepts. This will help the aspirants understand the concepts better.

For essays for MAINS-UPSC and PCS:

1. Choose the topic carefully. Make sure the topic is relevant to the syllabus and has enough scope for research.

2. Conduct thorough research. Read books, journals, and articles related to the topic. Use reliable sources only.

3. Structure the essay properly. Divide the essay into sections like introduction, body, and conclusion. Each section should have a clear purpose.

4. Use relevant examples and case studies to support your arguments. This will make your essay more convincing.

5. Write in a clear and concise manner. Avoid using complex sentences and jargon. Use simple language that is easy to understand.

6. Proofread your essay carefully before submitting it. Check for errors in grammar, spelling, and punctuation.