Clean rice with water few times. Soak raw rice in water for 2 hour.
Drain the water and spread it on a towel for minimum 2 hours. If you feel its still wet, leave it for some more time.
Grind it to a fine powder using your food processor.
Sieve the flour twice and spread it on a plate for few hours.
Store rice flour in a dry container and use it to make snacks or as a thickening agent.
I have used sona masuri raw rice. You can use ponni rice too.