I've heard the following ways of performing Lamp aarti:
offer four circles to the lotus feet, two circles to the navel, and three circles to the Lord’s face; then offer seven circles to the Lord’s whole body.(ISKCON)
Others say only one circle to lord's face and rest is same.
I'm looking for a shastric evidence.
I've found a video of ramanandi guru Jagadguru Rambhracharya Ji Maharaj but couldn't find the shloka he recited. https://youtu.be/Gj6ufc8N6mU