Grip Throwing

Football throwing grip question help please?

So right, will anyone tell me what grip is the proper way to hold the football? I’m focusing on throwing right now hehe.. so yeah my teacher also told us to put middle,pinky, and ring finger on the laces and the index beside them but not on the lace.. yeah it didn’t work for me. It wasnt a tight spiral at all. So I was experimenting and I found that putting my pinky and ring finger on a diagonal angle OFF the laces and the middle on the lace and the index close to the lace while throwing it sidearm gives me a veeery tight spiral.. but I’m still not sure.. is there a special grip for sidearm because everyone tells me my grip isn’t right
I don’t know any football coaches.. my old ones were from like 2 years ago

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How To Grip / Throw A Cutter – (SICK)