On my '54 corner windows,,the guy did them in one piece,,no wrinkles,,no bubbles,,and no "fingers" as they call em. Expensive,but worth it. This guy was a magician,,he could wrap a basketball with window film with no wrinkles.
Been 3 years now, still look good.
One thing i learned,,stay away from the cheap window tinters,like at flea markets,,mobile "at your house" companies. The cheap film turns purple in a year and looks like crap.
Marty