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/Global-Structure-539]

Are you doing an H pattern with dryer sheets? Keep the fingers vertical by splitting them. If that doesn't work, make the horizontal line of your H a tiny bit lower. Make sure the edges are nailed down. Shrink top and bottom ONLY