My tub upstairs leaked a large portion of water directly above the middle of the kitchen ceiling. The ceiling drywall doesn't have a hole in it, and the paint isn't bubbling. However after I fixed the leak and dried the ceiling I noticed the drywall had bulged into a long elliptical shape. So I sanded the ceiling down to what looked like even with the rest of the ceiling, but after painting it the bulge was still noticeable. So I re-sanded, and painted but then noticed I had gone too far with the sanding and had a shallow curve into the ceiling. So I tried to fill it with plaster only to realize it was again bulging. I repeated this a few times and each time I had to increase the outline of the bulge as I needed to smooth the edges of the latest fix attempt.
SO... I have given up on trying to hide it( unless you guys have ideas) and wish to do a faux paint paint finish. What is the best way to faux paint a ceiling?