change of target audience

i have decided to change my target audience for my magazine from 16-25 years old to 14-16 years old as i found that my magazines contents will fit that particular age range better. I have also used a 15 year old girl as my model which means that her fashion and music will fit the age range which means more people will be interested to buy it.
i was also going to have fashion tips in my magazines with my model in different clothes but i have decided to change that and just stick to basing it on music but it will talk about some parts of fashion in my double page spread.