1. How long should I write for each prompt?
Set a timer and do not stop until it goes off. Fifteen to twenty minutes for most prompts. The constraint and dialogue prompts in sections 4 and 8 reward slightly longer sessions of 25 to 30 minutes because the formal rule requires more setup. The first line prompts can produce something complete in ten minutes. The scale and time prompts in section 9 benefit from the most time because they involve structural decisions that take longer to resolve. Let the prompt tell you when it needs more time by whether you are still discovering something new.
2. What if a random prompt produces something I actually want to develop?
Follow it. The best thing a random prompt can do is produce a character, a situation, or a voice that you want to live with for longer. Keep the original draft, write it out fully, and bring it to Claude with the question: what is this piece actually about, and what does it need to become a complete story? The transition from prompt response to developed piece is entirely normal — the prompt is not the destination, just the door.
3. Should I write the first thing that comes to mind or think about it first?
Write the first thing that comes to mind. Thinking about it first produces the evaluated, safer version of the idea. The first thing that comes to mind is your imagination responding before your judgment has arrived, which is exactly where originality lives. You can evaluate after you have written it. Evaluating before you write it is how promising ideas get killed before they have a chance to prove themselves.
4. What if the prompt I pick genuinely does not interest me?
Write it anyway for five minutes. Your resistance to a prompt is often more interesting than your enthusiasm — the prompt that seems least relevant or appealing is frequently the one that opens something unexpected because it bypasses every instinct you have about what you should be writing. If after five minutes you genuinely cannot find an entry point, pick the next one. But the first five minutes of resistance are worth working through.