Take a medium size plate and add corn flour, salt, pepper powder, oregano, and coconut powder. And mix well with a spoon.
Take one marinated prawn and roll it carefully in this mixture and make sure that the prawns are completely covered with a coating. Keep it in a plate
Repeat the same process for rest of the prawns also. better to coat your prawns with hand so that you can coat all the prawns properly.
Crispiness comes because of this coating so this coating is the key for crispy prawns. The coconut powder adds extra crunch to the prawns.