There are many formats of storyboard design, you can even make your own. There is no standard, although you should be as clear as possible with the drawings so the entire team can understand your vision.
You can use 3D arrows to represent the movement of the camera, or the actor’s movement in the scene.
As a rule of thumb, you could spend some time learning about comic design, the same principles apply in this case. 3D Motion needs to the expressed on a 2D format and be compelling, emotional and eye-catching.