On the walls start at the top and bring the knife two thirds of the way down then start at the bottom and bring the knife up to finish off the knockdown.
Knock down ceilings do it yourself.
Spray the water onto the ceiling and let soak for a few minutes.
I am going to do attempt a knock down texture to match the rest of the house.
Walls and ceilings knock down ceilings i am finishing my basement and am getting close to finishing the ceilings.
Fill a spray bottle with water.
Scrape off the popcorn texture using sheetrock mudding knives.
Once the ceilings are scraped sand the entire ceiling to get off the rough edges.
Knock it down in the same order you applied it.