This is an area where I am a complete novice. My presenations have been strictly in teaching classes and doing presentations of fitness material to groups of individuals in that field. People who work in presentions and who are employed as voice over talent have suggested that I get into this field due to the quality of my voice.
The simple training that I have is going through workshops in how to control classes through use of your voice. Teaching everything from kickboxing to pilates and yoga, my voice varies from one extreme to the other. Many of my students recommended that I put together a video teaching abdominal exercises. This was recorded at a friends house and sold very well.
I've been teaching fitness classes for over 10 years and have a great command of my voice. The range from soft to explosive, quiet to strong can be experienced by simply listening while I teach. I've achieved a talent for instructing a class of all levels by verbal commands that each level can follow. Choosing my words carefully so each person will know what to do with their body.