An intrinsic quality is needed for a style to be legitimate and innate. You must be a chameleon with a progressive vision. Try discovering beauty in aesthetic concepts that most people would find unattractive or odd. Some people’s talent to reinvent the ugly made them create empires by combining awkward items with visionary elements. “Cool” stands for aesthetic of attitude,behavior,comportment,appearance and is clearly an excercise of individual style.
I suggest you can start by avoiding what most people choose ! The mere fact that you will be different from the others will make you more appealing. An unconventional behavior that will set your theme of self-identity.
“If it’s fake, it doesn’t work. It has to be true to yourself first and then it might be successful” Miuccia Prada