For what it’s worth; those twist pins are still holding just fine, lmfao.
It’s a bigger/tedious job to do it right. Whenever you get to it, the prep work of the surfaces will make or break a lot of your effort. Get a good adhesive remover and clean everything up before you spray any new glue down, get a legit headliner fabric that will have foam backing attached from manufacturer and if you can swing the extra cash, may as well put some insulation on the sheet metal before you reinstall everything.
Fun pattern may help cover up little mistakes when all said and done. There’s a little bit of a learning curve but nothing you shouldn’t be able to figure out with a couple tries. Start with the small pillar trim pieces to get a feel for it.