This guide to repairing your vehicles headliner is pretty helpful! A droopy headliner can be so annoying and ruin the experience of driving a classic car. Just remove it, trim up the fabric and re-glue the edges and then replace!
Here's the guide on iFixit: https://www.ifixit.com/Guide/Repairing+Vehicle+Headliner/9739
Anyone else have some headliner tips?