Narrative structure and our own film

I have outlined two narrative theories; Propp and Todorov, we as a group are going to try and use these two theories in our trailer. We are going to show this by having the seven types of characters show in the Propp theory and we are also going to have a equilibrium, a distruption of the equilibirum but we are going to alter the end as we aren't going to have a happy ending as we are planning on making a British film instead of a Hollywood film and aren't necessarily having a happy ending for the main protagonist