Removing Textured Ceiling
When skimming, start in a corner of one side of the room, work your way across. When you reach the other side, move over and always skim "into" the fresh mud, don't start your knife in the wet mud on the ceiling. This will take practice, and always put the mud in a 5 gallon bucket and keep it wiped down, little dried particles of mud will case ill effects in your work. When finished for the day wipe down the sides of the bucket with a wet rag until clean(do not scrape) and cover mud completely with water. Pour off the water and remix the mud the next time you are ready to use.