tattooing traineeship

hello:) my name is tom, well, i have been interested in tattoo's for as long as i remember. unfortunately i have NO communication with the tattoo world through friends or family. i am 15 going on 16 in November, no longer going to school. i know you cannot ask for an apprenticeship and just get it, i just need pointers. what type of art do i need in my portfolio, i can do just about anything other than mechanical things, like vechials and guns and things, im terrible at that stuff. well yeah, i would really, really love some feed back, also, maybe some artwork what i should copy and draw into my portfolio. i believe i am a fantastic drawer, but as everyone knows, that isn't nearly enough. i have a lot of confidence and i go into tattoo stores regularly, just, no one is willing to teach someone who doesn't provide the art first:P haha yeah. so please help? it will be appreciated muchly. tom, newcastle australia