Experience:
Second and most important thing that you keep on your mind before hiring a guest speaker is experience of related field. Experience is help to become a knowledgeable keynote speaker and return complex topics into simple concepts to their audience.
Confidence:
Guest speaker that have less confidential, he does not define a concept effectively. Lack of this type of un-confidence, he does not prove himself on the spot and audience will be gives him bad response. But if the guest speaker has a great self confident then he could make his talk and conversation in a reputable sense so, audience must thinks about to believe his talks.
Friendly Manners:
We know very much that a person create an effective impression with the quality of friendship. If a professional keynote speaker generate a friendly environment with his audience then he well control them and make a solid atmosphere in the meeting or seminar.
Thus, it is the main virtue of an inspirational speaker. So in the end, we can say that a keynote speaker is an important person who plays a big role to deliver an event and make his audience cheerful and confident. Effective speaker build his events very concrete and meaningful and also prepare it with ultimate timing.