Pick one rainy day. Don't write about rain — write what happened.
What do you do when it rains? Write about a rainy day.
Everyone gets the same subject. What differs is the follow-up: one question for children, two for teens, three for adults. Only the children's wording is simplified.
Cut at the conjunction. Where “and” or “so” appears, a period belongs.
Write as if no one will read it. You can choose what to show after you finish.
Write down one thing that happened recently. It does not have to be a good story.
One line against your own view makes the whole piece stronger.
'Last Tuesday' always beats 'sometimes'.
Say the conclusion first and the rest sorts itself out.