So far you have defined everything in the Perspective viewport without considering lighting or cameras. As you prepare to produce output from your 3D scene, you will want to add cameras and lights to achieve a more realistic effect. Lights can cast shadows or add shiny highlights. Cameras can be animated so that they change your perspective and add emphasis and motion.
Target camera from Top viewport
If necessary, right-click the Camera01 viewport label and turn on Smooth + Highlights.
Target camera created on the ground plane
Truck and Dolly the camera to bring the hourglass into view.
Orbiting the camera
Show Safe Frame helps you frame your shot.
Because one cap is an instance of the other, changing the number of sides on one cap automatically affects the other.