Dewali is a very famous festival of India..On this day ,we light lamps in every corner of our house,brust firecrackers,greet each other,eat sweets and visit to relatives and friends.
If you don't mind, I'd like to correct your last sentence:
Dewali is a very famous Indian festival. On this day, we light lamps in every corner of our house, set off firecrackers, greet one another, eat sweets and visit relatives and friends.