Many voice over schools suggest to "Make a commercial demo."
That is fine.
However you should also consider a narration demo since narrations are approximately 95% of the industry (i.e.: audiobook, documentary, training video, website narration, cartoon animation, educational film, telephone system, corporate presentation, etc.).

Call us 641-594-7078
Mondays 10pm-10:30pm ET
Wednesdays 3pm-3:30pm ET
Fridays 10am-10:30am ET