Writing the score for the teaser trailer

I have begun writing the score for the teaser trailer. I am writing for a typical cinematic orchestra of a string ensemble, solo strings, a large church choir, a brass section of tumpets, trombones and horns and a selection of worldly percussion instruments.

The first theme is introduced quietly by solo cello, followed by the second - a stylistic tonic minor chord played loudly by the entire orchestra. This opening creates an atmosphere of darkness, keeping the audience in suspense. The main theme develops as the string ensemble enter, playing hypnotically on every beat. This is continuously accompanied by the second idea playing short and sharp chords that are strategically placed to emphasise certain moments in the teaser trailer, namely the company logos and the antagonists. As the teaser trailer reaches the romance scene and then the montage-like section, I want the music to develop into a more heroic and dynamically stable section.