Not a teacher.
I was born in non-English speaking family. However, through years of education I can speak and write in English moderately.
I saw that people are making money by selling articles they wrote and I want to try to do the same. However, I don't have the courage to do it as I know my English is not perfect.
What is your advise?
People normally write articles about things they know. What do you know? What do you want to write about? Just saying you want to write articles to make money is sort of vague.