u/sunbl0ck

Is there a trick for making straight lines with a brush? I tried masking tape, but paint sipped through the edge a bit. I tried freehanding it, but I suck.

[PC - CachyOS]
I'm supposed to kill and hide the body "in one slick move", but it says I got to drop the body to do it. Once I do, I fail.
Is this a bug or am I very special?