coming out as bi

Louisa
Okay so I have already told my closest friends that I am bisexual and they were very excepting 
I wad 14 years old when I told them I am 15 now turning 16
Now I want to tell my dad but I am not sure if he will be as excepting 
Any advice? On how to talk to him about this 
I am in my second last year of high school in Australia