what do you believe makes you stand out as a strong candidate for admissions

I came from a poorly educated environment,nevertheless, I’m representing my country in applying for the top 30 universities in the world. I self-studied for the regional math Olympiad and got first place. Since two years ago, I’ve become financially independent as I had been working and studying at the same time (Macdonald’s) . I was chosen to compete in a live national cultural competition ( diction skills).