Go into detail, but don't ever go over three pages. If you've done captioning or realtime work as a volunteer, absolutely list it. Don't get overly fancy and artistic about the r sum . You're trying to get a job as a captioner, not as an artist. Keep it simple, readable , professional, readable , concise and readable .
Nothing's worse than a r sum prepared with eight-point script type.
If the manager has to get out a magnifying glass and squint, the r sum is going in the trash. Prepare a list of references. Your potential employer will want to talk to people you've captioned or realtimed for in the past. As a courtesy, make sure to notify everyone on the list that you've included them and that they may be receiving calls about you. Prepare a demo tape.