Improving technical drawing skills is essential for answering questions in the Mechanical Engineering optional subject. Here are some detailed steps to enhance your technical drawing skills:

1. Understand the Basics:
- Start by familiarizing yourself with the fundamental concepts of technical drawing, such as orthographic projections, isometric projections, and dimensioning.
- Learn about different types of lines used in technical drawings, such as construction lines, centerlines, hidden lines, and object lines.
- Gain knowledge about various symbols and conventions used in mechanical engineering drawings, such as surface finishes, geometric tolerances, and welding symbols.

2. Study Reference Materials:
- Refer to textbooks, study guides, and online resources specifically designed for mechanical engineering technical drawing.
- Explore the content available on EduRev, a platform that offers a wide range of educational materials for UPSC and other competitive exams.

3. Practice Regularly:
- Dedicate time to practice drawing different types of mechanical components, assemblies, and machine parts.
- Start with simple objects and gradually work your way up to complex mechanisms.
- Focus on accuracy, precision, and attention to detail.
- Use graph paper or engineering drawing sheets with proper margins and title blocks to simulate real-world drawing conditions.

4. Analyze and Interpret Engineering Drawings:
- Study and analyze existing engineering drawings to understand the layout, symbols, and annotations.
- Pay attention to the relationships between different views, dimensions, and geometric tolerances.
- Practice interpreting drawings to visualize the three-dimensional object accurately.

5. Utilize Computer-Aided Design (CAD) Software:
- Gain proficiency in using CAD software such as AutoCAD, SolidWorks, or CATIA.
- These tools offer a realistic and efficient way to create technical drawings, enabling you to practice and refine your skills.
- Explore online tutorials and video courses to learn the basics of CAD software.

6. Seek Feedback:
- Share your drawings with experienced mechanical engineers or professors for feedback and suggestions.
- Join online forums or communities where you can interact with fellow students or professionals to exchange ideas and learn from their experiences.

7. Take Mock Tests and Solve Previous Year Question Papers:
- To prepare for the Mechanical Engineering optional subject exam, practice solving mock tests and previous year question papers.
- This will help you become familiar with the types of questions asked and improve your speed and accuracy in answering them.

Remember, consistent practice, dedication, and a genuine interest in improving your technical drawing skills are key to mastering this aspect of Mechanical Engineering.