Read a lot of fiction. By reading different works, you can learn from other authors' techniques. Practice writing regularly too.
One way to master 'the art and craft of fiction' is to understand the basic elements thoroughly, like character, plot, and setting. Then, focus on the nuances. For example, learn how to create complex and believable characters. You should also study different narrative structures and how they impact the flow of the story. Another important aspect is to keep writing and learning from your mistakes. Revision is a key part of improving your skills in the art and craft of fiction.
To master 'the art and craft of fiction', you need to study the masters. Analyze how they create characters, build plots, and use language. Then, experiment with different styles and techniques in your own writing. Also, get feedback on your work from others, such as writing groups or beta readers.