First draft of making a movie poster

This is my first draft of trying to make my documentary poster. I have chosen to draw and illustrate the earth that is on fire which suggests the documentaries name.
I've also thought about how can I improve this.
Because I won't be able to take an actual photo of the earth on fire I will have it drawn, however, I think that the background might be an extream longshot of some trees and the horizons.