Terrain:
Your terrain is horrible, and it's one of the most impotent things in a cinematic. You have spammed doodads in your graveyard, and you have spammed trees all over the map aswell.
Imports should could help you improve it.
Sounds:
Neither this you have tried to perfect, and you have just taken whatever you could find of sounds inside the editor. Try and make your own voices to the subtitles and import some nicely made. A cinematic isnt a 5 minute project.
Grammar:
Your grammar is not even 100% filled sentences, and you have spammed alot of !?!?! which should not be included in a cinematic. Unless you are trying to make a comedy. Also your story in this cinematic makes no sence, try to make a story before doing the cinematic next time.