Enhance the test cases!

1 :- Priority / Risk Analysis
2 :- Pareto Principal
3 :- Requirement Traceability 
4 :- Equivalence Portioning
5 :- Boundary Value Analysis 
6 :- Cause Effect Graphing
7 :- Orthogonal Array Testing
8 :- Error Guessing
9 :- State Machine
10:- Decision Table