How to score good marks?

Whenever a person appears in an exam,score marks but how to get good marks is just like a puzzle sometimes solved & very often remains unsolved.To score a satisfying marks in each & every attempt ,we have to follow certain steps-
1.Time management
2.Speed with accuracy
3.Limited yet complete
4.To the point
5.Exclusive answer
6.Complementary nature
7.Analytically conclusive
8.Specific Format
9.No overwriting
10.Systematic fluency.