I am a Perfectionist! If it ain't right it is shit! Now, if you hire a person to install your Headliner, then it had better be Wrinkle Free! The Sew Lines better be Parallel. It has to look Perfect! If not then it is a Huge Square Foot Area Screaming Out "I Suck"! But the real screw up is to install side muffs with wrinkles! Gosh, what Car Restoration Preschool did these past owners get Flunked out of?