A person doesn’t have to be an artist to be able to pick and choose their own backgrounds, characters and props to visually tell a story in panels.
The Amazon Storyteller is constantly developing, which is why not all features (like spaceships, robots etc.) are available. Amazon Studios asks for feedback and help to improve this product.
The Storyteller starts with browsing through a script the user uploaded. Next it recognizes and fits the background, characters and props accordingly to the descriptions. Storyteller uses a library of images to portray the scenes. The next step involves the verification of generated panels that need to be placed accordingly. A user later gains the opportunity to share their work with other users.
As for the policy of Amazon Studios regarding scripts and scenarios, everything is clearly presented in the FAQ section of the product. Reading the rules and regulations of the product is also advisable.