Summer trailer evaluation

I have attempted to follow the 3 act structure in my trailer. I have attempted this by including an equilibrium where the characters are introduced as being normal and average teens who go out and enjoy their lives. This is accompanied the text "3 normal teenagers living their normal lives." This part of my trailer is then followed by the disequilibrium which shows my main character being persuaded and pressured by her friends to smoke. The reason i have included this scenario is to introduce a theme of the final girl. However, this was met unsuccessfully as "The Final Girl" is typically shown in slasher films, therefore, this was not a typical convention of a supernatural film. The final part of my trailer shows the last scene of my movie which desensitizes the audience. This is a huge disadvantage as it won't come across as scary to my audience and they would already be aware of how the movie is going to end, therefore, i must ensure that i do not do this in my next trailer. 
The use of lighting and location has also impacted on how scary my trailer is. I have used a high-key lighting which is not a convention of horror movies as they typically use low-key lighting. The location of my trailer was filmed in a local park. This is an extremely bad location to film a horror movie trailer, and after carrying out more research into horror movies, they are usually filmed in dark, mysterious locations which can create a sense of enigma to the audience such as warehouses etc. 
Another convention of horror movie trailers which i should've used is stock scenes. This creates a feeling of suspense and would attract my target audience. Therefore, i must ensure that i use this convention when creating my next horror movie trailer.