How do you fix wonky wall to ceiling corners pictured

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Hi All.

I will like to know how to fix wonky ceiling/wall corners like the one pictured below. My thinking is that if i caulk it to make it nice and straight then i can paint it, on the other hand I am thinking the walls are new stud walls and not sure if its a good idea to put caulk on it.
upload_2021-9-15_11-49-24.jpeg


Thanks in advance.
 
IME caulk will crack. Look for a paintable silicone. Or white if you have a white ceiling.

When I had a problem with wall/ceiling joints, I worked from above and injected expanding foam (preferably pink fire grade) along the edge to hold the wall and ceiling together, after hoovering out all dust. I don't know if that is generally considered good practice.
 
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