Write about 5 to 10 hip-hop songs with original lyrics.
Copyright your work. By copyrighting a few songs, you can show others your work as samples without them stealing your lyrics.
Allow local hip-hop artists and hip-hop producers to read your songs. If you become a ghostwriter for a local artist or producer, people will recognize your name as they begin to recognize the artist's name.
Send your copyrighted lyrics to hip-hop record labels and producers so they can see samples of your work.
Visit local record companies in your area. Talk to CEOs or anyone else who has authority in the company. Let them see your work.
Call your local radio station and ask them for contacts that might help you become a hip-hop ghostwriter. Call, email, or write the contacts and send them samples of your work.