Here are the precise rule

1. The precise should be one third of the whole passage.

2. The precise should be in your own words.

3. No information should be left.

4. Examples (unless very important) and other irrelevant things should be omitted.

5. Never explain what is written. Just rewrite in your words.

6. Your precise should clearly portray that you have fully understood the passage.

7. The sentences should have coherence. Meaning that the sentences should be linked together.

8. No grammatical mistake.

9. The words should be written properly and short forms should be avoided. e.g. Never write "don't". It's "do not".