How to use "visual" in a sentence

Peter thinks that for a film there must be something visual about the murder weapon

At night, the fabled Strip was a dazzling sight, a surging river of light: red, blue, green, yellow, purple, pink, turquoise - every color within the visual spectrum of the human eye; incandescent and neon, fiber optics and lasers, flashing and rippling

I simply said, "Well, a red-hot glowing road is a great visual." In fact, it would be such a fantastic visual that it would be visible at night from orbiting satellites, like a neon arrow pointing toward the secret installation that it served.