My little brother was messing around in my 79 cutlass supreme, and he
made part of the ceiling start to fall down how much will that cost to fix and
should I take it somewhere or do it myself. Thanks for your help.

Had the one on my 1979 Cutlass replaced a couple of years ago for around $100 complete they removed took off old cloth put on new the same color in about 1 hour while I waited most of time was waiting for spray glue to set before putting on new cloth. Finished job looked as good as new. The originals tended to have the cloth seperate from the foam padding then flap and fall down .

Alright thanks I live in Anaheim,CA I don''t know if you know where that is,
but if you do where do you think I should go to replace it.