Most of the advice that is given when dealing with the question of how to give our opinion or perspective on an issue, is focused on what to say, but our non-verbal communication is as important as the words we use.
If discomfort or aggression is transmitted with our body language, it could make the recipient feel insecure and, therefore, prevent them from listening or acting on their comments.
Therefore, an effort must be made to have a positive, open and supportive tone. Always maintain eye contact to create a sense of connection. Do not cross your arms. Smile appropriately to project warmth and good will.
Hya to show that you are listening, making an active listening. Make sure your posture does not convey a sense of ownership, especially if you are above the person receiving comments. The most important thing is to do none of this if it is done seriously. If your body language is not authentic, your efforts will end up being counterproductive.