You might …

Use the form from the booklet ‘Gestures: Your Body Speaks’,

Pay attention to just one aspect of body language:
– posture, e.g.,
>    Easter position – hands over ‘eggs’
>    Michael Angelo’s posture – too relaxed and asymmetrical
– gestures (scratching the head)
– body movement (tense, uncontrolled)
– facial expressions
– eye contact

or a part of the body:
– hands (prayer, clenched, ‘pussy’)
– legs (dancing, shuffling)