Determine what type of voice actor you want to be. If you are more interested in animation or similar jobs, listen to and study other professional voice actors in those areas. If you are interested in narrating or advertising, research those professionals. Determine what type of acting best suits your voice; consider your tone, quality, range and accents.
Choose a voice recording script. It should include voice overs that you would hear on the radio or on television on a regular basis. Practice reading the script and working on your inflection, pronunciation and energy.
Select a studio engineer who can record you for your vocal demo. Make sure that the engineer is reputable and that his or her credentials are sound. Record your demo, creating individual tracks that are five to 20 seconds long each. The entire track should be no more than two minutes long and no less than one minute long.
Get a list of voice-over acting agents near you, and research to find out which agent you would like to represent you. Find out as much as you can about the agent, including who he has worked with in the past, what kind of voice acting he prefers, and what he is looking for in a client. Also, search for specifics that he might have as far as submission guidelines.
Prepare a voice-acting resume and cover letter if the agency requests it in their submission guidelines. Include any pertinent information regarding acting, singing, performance or voice-acting experience. Also include any foreign languages that you are fluent in. Send your resume, your demos -- which you should put onto a CD or other music storage device -- and a self-addressed stamped envelope to the agencies of your choice, addressed to the agent you hope will consider you. Label each of the contents of the package with your name and your contact information in case the agent misplaces one of them.