Poker faces are not good for business. Facial expressions play a vital role in presentation skills facilitation.  See who our presentation skills presenter is. Crossed arms show an unwillingness or disinterest in the conversation. Speak loudly, but confidently. An effective communicator is heard, but not misunderstood because of tone or inflection. Speak at an appropriate volume so your entire audience can hear your thoughts and ideas. Present a tone of confidence and understanding. This tells your audience that you are worth listening to. Voice projection is the strength of speaking or singing whereby the voice is used loudly and clearly without shouting. It is a technique that can be used to demand respect and attention, such as when a teacher is talking to the class, or simply to be heard clearly, as an actor in a theatre. Breath technique is essential for proper voice projection. Whereas in normal talking one may use air from the top of the lungs, a properly projected voice uses air properly flowing from the expansion of the diaphragm. In good vocal technique, well-balanced breathing is especially important to maintaining vocal projection and a useful presentation skill. The object is to isolate and relax the muscles controlling the vocal chords, so that they are unimpaired by tension. The external intercostal muscles are used only to enlarge the chest cavity, whilst the counter play between the diaphragm and abdominal muscles is trained to control airflow. There are always two steps to giving a presentation, its organization and its delivery. Because of that there are two steps in which poor choices can be made. Who said that essential presentations skills are not technical in nature?