Foreshadowing can appear in subtle clues or explicit warnings within a dialogue, setting descriptions, or through a character's thoughts or actions. A character finding a mysterious key early in a story might foreshadow its importance in unlocking a crucial secret later on.

In speeches and presentations, foreshadowing creates suspense and maintains attention. 

‘By the end of this talk, you'll know the crucial strategies that so many professionals don't know when they make the jump to leadership.' 

This piques interestand sets the stage for a dramatic revelation.

Foreshadowing is not just for storytellers and novelists; it's a powerful technique in public speaking that weaves complexity into your stories and makes your messages resonate.