Copy writing your podcast isn’t that important. It is far more important to think about Trademarks when your podcast brand becomes valuable to make sure no one can copy you and gain from your brand.
Podcasts are completely free on Spotify at the moment. Thus, Spotify won’t pay you any royalties no matter how many times your podcast is played or downloaded.
How Do I Make Money on Podcasts?
Advertising / Sponsors is the main way to monetize a podcast at present. You will need to create a podcast with listeners and then go out and find Sponsors.