Here are some tips that can help with this:

Compliment at the right time. If you notice something good in a person, do not postpone the compliment for later. It is better to do it as soon as possible to leave a good impression.

Be sincere. Compliments should be sincere and reflect exactly what you think. Don't say things that aren't true or that sound unbelievable.

Focus on qualities, not looks. Of course, compliments about appearance can be nice, but they must be accompanied by compliments about the person's qualities. They are more meaningful and build trust.

Don't bend the stick. Too many compliments can look disingenuous and cause distrust. Choose only those compliments that really match the personality and actions of the person.

Listen and communicate. The best compliments come from interaction and communication. Listen to what your interlocutor says and celebrate his successes and achievements.

Remember that everyone is unique. Each person is unique and deserves an individual approach. Choose compliments that reflect the personality and qualities of each person.

Be prepared to receive compliments in return. Giving compliments is good, but receiving compliments is also important. Be willing to accept compliments, be grateful for them, and don't brush them off.