Target audience

Because I am making a horror film opening with dancing, my target audience would most likely be teenagers and adults above the age of 12.
I wanted to use the horror genre for my main task from the beginning. Because of this, I wasn't interested in researching what kind of film openings younger audiences would enjoy or how they would react to certain films. I focused on films for audiences aged 15 and over, especially horror films. All 4 film openings that I deconstructed and the films I took inspiration from for my film opening ideas are all rated for audiences over 12 years old.
When I sent out my questionnaire using facebook, the main ages of the people interested in watching horror films were 16-19.
One of the most chosen answers for 'What would make a good opening?' was 'Something I won't understand until the end of the film.' This could mean that most people who pay attention to movie openings and who would be interested in this kind of movie, like to be kept guessing after the opening scene. They don't like the whole film to be given away at the start, they prefer to be surprised or shocked. I chose my opening to be quite mysterious based on this, because you aren't sure why the creatures are dancing or why they're even there.
I don't think the film opening would be suitable for younger children as they don't like to be scared and they might not understand the Zombies, which could make them more afraid.
However, when I have finished filming, as part of my audience feedback questionnaire, I will show a small part of the film to an audience of different ages, including my younger sister, who is ten years old. I will ask her for her reaction to the movie and whether or not it slightly scared her or if she enjoyed watching it. I will also show it to some of my friends, aged 16/17 and to my mum and step dad, to gain different views and opinions and research on how suitable the film opening is for my intended target audience.