An idea rarely arrives with a plan. It appears in a conversation, a memory, or just before sleep. The important thing is not knowing what it will become, but giving it a place.
Recognize the spark
Notice what makes you react: an emotion, a strange detail, a recurring question. If an image stays with you long after you discover it, it may deserve a few lines.
Do not look for a grand story yet. Look for what makes you want to write.
Keep a trace
Choose one place to collect your ideas: a notebook or a note always within reach. Write down the scene, the exact words and how you felt. A few sentences are enough to find the spark again later.
Your turn · 3 minutes
Complete this sentence without stopping: “What if, one day...” Then add a character, a place and an obstacle.
Give it direction
Read your note again a few days later. What question does it ask? Who could live it? What would change for that person? You do not need every answer to write a first scene.
Your next story can begin with these few lines.

