While writing test cases, always correspond with the end-user perspective.
Steps defined in the test cases need to be simple so that anyone can replicate the steps.
Break down the requirements into test scenarios that can be tested individually. Always cover both positive and negative test cases.
Prioritize test cases based on their importance and likelihood of occurrence. Focus on high-priority test cases first.
Each test case should test one specific feature or functionality. Avoid creating test cases that test multiple things at once.
Save time and ensure that the test cases are reusable.
Review them regularly and update them as and when the functionality gets updated.