I know I'm a potential author, no doubt. But my problem is knowing all the formalities and informalities in written English. Or if I write in my native language will you buy ?

Writers kinda know they can write so I believe you. Do you want to make money with your writing or do you want your locality to be the sole peruser of your work. Its ok to write in your language if you are teaching bored children whose parents forgot to teach them their native tongue or if you are in adult education, a teacher maybe.

Use the English Language, the formalities as you put it, is what makes it more fun.The idiosyncracies of the Eng lang is just mind blowing.
Wish you pen-to-paper in your writing

@poster
if you write in your native language, your market wont go beyond your friends and family (those of them that can read it). If you want to write an indeginous piece rich in culture, then you should take cue from the likes chinua achibe et al.

@ poster,

since u knw all d (in)formalities in ur native language, simply write and translate to english abi!?