Provide the learner with some basic stage vocabulary. Acquaint your learners with the stage by teaching them, for example, that upstage means to move towards the back of the stage while downstage means to move closer to the front.
Practice voice projection. Start each lesson session by having learners stand up and take deep breaths, fully filling their lungs and exhaling with force. Encourage learners to breath this deeply when they are on stage as doing so allows them to properly project their voice.
Help the learner develop a comfortable stance. Many speakers clench their muscles when on stage as a physical response to their fear. Help your learners overcome this by having them stand at ease and shake out their arms and torsos. Encourage them to remain this relaxed as they speak by reminding them to loosen up should their muscles tighten while they are presenting information.
Pair the student with another for practice presentations. Allow students to ease into presenting on stage by starting with presentations in front of peers. Circulate while students present speeches or monologues to each other and give them tips.
Critique the learner's stage presentation attempt. Watch learners make stage presentations and give them suggestions for improvement, helping them become more fluid in their presentation and likely washing away even more fear.
Provide ample practice opportunities. Give each learner as many chances to take center stage as you possibly can. The more opportunities you give them to step up and take the stage, the more comfortable they will likely become.