You've heard these before:
- Chest up.
- Extend your T-spine.
- Create torque in your hips.
Those are cues which work well, but can sound like Elvish to many trainees, particularly when they're new to deadlifting. Instead, get more acquainted with external cues which, contrast to their internal counterparts (which speak to what the body is doing in space), imply intent or direction.
These can be game changers when it comes to helping people better understand what you're asking them to do as a coach.