Make a long story short... I had a popcorn ceiling I have been wanting to remove. Seems alot of contractors put it on, but nobody (I could find) removes it. So I rented a powered drywall sander and went to town. It smoothed it down a little then I skim coated the ceiling with joint compound. The question is... was joint compound the right thing to use? I am starting to second guess my decision in using that.