My house has the lovely popcorn & glitter ceiling that I hate. Since the crack was into the ceiling, I decided to finally tackle removing the popcorn. Afterall it's only a 10x10-ish sq foot room. It's not hard, it's just labor-intensive and MESSY!! That was not a fun day. (BTW, if you ever decide to take down a popcorn ceiling, always have it tested for asbestos first. Though I highly recommend hiring the job out if you are considering removing your popcorn ceilings. It's not fun.) I removed it and did the oh-so-fun cleanup then waited about a month to have any motivation to be in the room again. After sanding down the ceiling and creating another giant mess to clean up, I started in on the patching work. Due to the size of the cracks, I used mesh tape to first cover them.
Then I glopped on, I mean, expertly applied drywall compound.
Then came sanding, another big cleanup, priming, and painting. I primed & painted the ceiling too. I was pretty happy I had just enough primer & white paint in the paint can stash in the basement to finish the job without buying any more. I also had left over paint for the wall color from when I painted the room about a year & a half ago. And here is the finished product. The patch jobs may not be the most professional, but it's done. I was quite proud of my home-owner skills. I may have watched too much HGTV in my time, but it's come in handy.