Target Audience

I feel as though my target audience is pretty self explanatory, this is because, the film that i am making is a thriller/horror and is about zombies so i feel the films target audience will be from the ranges of 12-18, this is because a lot of similar films to mine are rated as this so i feel that it will be a good age range for my film. However a lot of films that mine is similar to or based on are rated 12 or 15, however because i do not poses the budget of major movies my film will be a lot less realistic and therefore to as effective making it not enough to be rated an 18, also there are not as many types of factors in this short film to make it such a high rating such as: Language, Sex, Drugs/Alcohol, however it does contain some violence and gory scenes but these are not really bad enough to make the film classed as an 18.