Quinceanera Ideas

I was wondering if anyone had any ideas for my 15 i got the colors that i want and an i dea of the center peices that i want and who i want to go but i reall need help to find ou tany thing else that i need and i know what dress i want bgut my dad and aunts are kind throwing my 15 for me and i don`t get to see them very much and i don`t get to talk to them much about it so they tell me to start thinking about what i want but i do not even know where to start if you can give me some pointers on what to do that really help me out alot