u/PureLoad5035

Ok so I’m working on changing painted popcorn ceiling to knockdown. I started by using my drywall sander with 60 grit to knock it down. Found some spots that came off in small sheets then I decided it would be bettter to scrape it off. Now I’ve found some things I need guidance on. So the big piece of drywall I cannot scrape off the popcorn . And there’s also black stuff on it( I guess mold) there seems to be some water because it is discolored but it feels solid. Is my only option to cut out the entire piece.( it was previously repaired by home owner).

Always looking to improve !!!! How did it come out!! Lmk. My thoughts he had lighter orange peel texture, I didn’t wanna over due the texture but I think I under did the texture

How’s it look , 1 coat of 5 min, feather edges sand it down then 2nd coat all purpose mud.