Well I would say it needs to be Abstract. Blend the Speech with the Desert it is awful looking footage…

Show the Harvesters even if you re-use footage and flip it or something… Just have the Audio mixed with the Desert. Have the dual moons deleted shot off the trailer. Find Aerial Desert Footage sand blowing in the wind when she is talking about we are the secret say. Even use the mini-series perhaps show movement under the sand tease the worms with Worm sign and add a crack of Thunder.

A huge Sandstorm would also work.

https://www.youtube.com/watch?v=wAEi9s9bEpY

https://www.youtube.com/watch?v=nhsD6kLYIMM

Feel the Power and the magnitude of what is being said.

Rouse the viewer and show them this Universe.

https://www.youtube.com/watch?v=nhP_9bFQvjg

https://www.youtube.com/watch?v=LQQRaYnIyK8

A few more try to convey sand is like stars in the universe with the sandstorm show folding space match this together the sand like the stars.