Every verbal communication, every sentence, contains one or several specific words (mostly nouns), each of which calls for emphasis for dramatic effect, unless they are redundant. However, this emphasis will not be the same for each of these words. You must consider the relative emotional weight of these significant words relative to each other within the framework of the message. Listen carefully for this phenomenon when you watch an effectively narrated documentary. Observe this also in spontaneous, highly motivated conversation, where the person speaking is totally immersed in his or her subject.
Your mastery of this phenomenon will be readily apparent to your audience, as well as to prospective producers who will become your future clients.