I created this shader by following a tutorial by TripTilt: https://www.youtube.com/watch?v=-lJDtNdMN7E
I created the Vignette effect by following a tutorial by Ryan King Art: https://www.youtube.com/watch?v=0RyaSB9qyL8.
TripTilt's Channel Link: https://www.youtube.com/@TripTilt.
Ryan King Art's Channel Link: https://www.youtube.com/@RyanKingArt.