To dream that you are on a stage represents your behavior, manipulation of and relationships with others. It is telling of your interactions with society. You are putting up an act and not being who you really are. There is a saying that goes, “all the world is your stage” and the dream may thus refer to your desire to be the center of attention. Also consider how your stage performance parallels a waking situation.
To dream that you are on a side stage, reflects your introverted personality. This dream is telling you that you need to be more confident and self-assured.