Based on the story "A Scandal in Bohemia," Sherlock Holmes would likely give students advice about clear observation, sharp logic, and creativity as well as a warning about not underestimating other people.

Holmes observes the situation and the people involved with a keen eye. He notices small details and uses them to create and enhance a broad picture of events and characters. He doesn't just look; he truly sees. What's more, Holmes uses logic to form connections and draw conclusions about what he observes. He also employs his knowledge about how humans usually act.

Holmes also has a creative streak. He uses costumes to great effect, so much that even Watson sometimes fails to recognize him. Holmes thinks outside the box, looking for unexpected opportunities and taking full advantage of them. He develops a creative scenario that helps him locate the photograph in question.

Yet Holmes sometimes fails to remember that other people can match his cleverness. He meets his match in Irene Adler. She realizes almost at once what has been going on and who is behind it, and she is humble enough to admit her weakness in dashing directly to the photograph. She learns from her mistake and comes out on top with her quick-thinking response.

As for Watson, he learns a bit about trust as he follows Holmes' orders to the letter even though he doesn't understand them. He is typically solid and dependable through everything.