To articulate viewpoints effectively during interviews, candidates should adopt several approaches. First, practicing mock interviews can help build confidence and clarity in expression. Secondly, understanding the interviewer's perspective ensures responses are relevant and engaging. Candidates should also focus on structuring their answers using the S.T.A.R. method (Situation, Task, Action, Result) to provide clear examples from their experiences. Additionally, maintaining a calm demeanor and using body language to convey confidence can enhance communication. Active listening is also vital, as it demonstrates respect and allows for more meaningful interactions during the interview process.