Remember the way you are going to present your paper will leave a long lasting impact on the examiner's mind. Here are a few suggestions that you must follow to avoid  loosing marks unnecessarily. 

1. Don't mix rough work and fair work:-

You can make a separate space and do all the rough work. This will make your answer script look more organized and your answers well put. 

2. Writing Reasons/formulas wherever Necessary:-

Writing formulas, reasons and other important information will not only create a positive impact but will also fetch you more marks as reasons and formulas carry marks. 

3. Handwriting does play a part:-

The way you write is important because examiner should be able to understand what you have written. If you have a good handwriting, it's definitely a plus. 

Make sure your handwriting is at least readable when you write the exam. 

4. Leave at least 2 lines space after each question:-

This is done to make sure two consecutive attempted answers do not merge with one another. 

5. Put Final Answer in a Box:- 

Highlighting final answer by putting it in a box helps to conclude the answer in much presentable way.