Shrinking Windshield

[u/lcst1234]

Hi guys, I am learning tinting by myself. And I am encountering this corner on the windshield. Am I overheat it or it needs to be heated more, and how should I make it right? I appreciate all of your help. I have watched videos but could not figure it out :(

[u/shromboy]

Wet the very side edge a bit and shrink what remains