PLOW AROUND TO PREVENT WOODS FIRES. SEE YOUR FIRE WARDEN BEFORE BURNING" poster
The pattern
This still is filed under Negative headline.
Define
The first line is a warning, a refusal, or a negated claim. Something the reader cannot skim as praise.
Mechanism
Pattern interrupt. A negative is harder to slide past than a compliment. The payload must arrive immediately after the stop.
Verdict
The category is full of sunny claims
Why it works
It doesn't just say 'be careful'; it provides a clear, visual 'how-to' demonstration of the correct, safe procedure. It respects the viewer's need to burn brush while giving them a practical safety mechanism.
Steal this when
You are trying to change behavior and need to show exactly how to comply rather than just issuing a negative command.