physical characteristics of speaking

Posture / Stance
Does the speaker’s posture suggest confidence? Any problems with rocking or swaying? Does the speaker stand equally on each foot? How wide is the speaker’s stance?


Movement
Does the speaker stand still? If / when needed, does the speaker move from place to place effectively? Is the movement seamless? Is it distracting? Too mechanical or wooden?


Eye Contact
How often does the speaker look at the audience? Does the speaker look up or down, or off to the side, distractingly? Does the speaker focus person-to-person throughout the group?


Facial Expression
Does the speaker smile, frown, etc. when appropriate? What is the speaker's "neutral" expression?


Gestures
Are gestures purposeful, smooth, and appear natural and unforced? Do they complement the content, or are they distracting? Are gestures used too little, enough, or too much?


Unconscious Body Language, Etc.
Leaning forward. Slouching. Furtive glances versus direct gaze. Where hands are / what hands are doing when not in use (In pockets? At side?). Nervous habits--key-jingling, pen-clicking, hand-rubbing, etc.