See how smooth it goes on? Even your first coat, even your first run. It's a beautiful thing, the topping compound just goes on smooth. Always clean off your knife. Whenever you take a little bunch out and you hit something with it, you go ahead and spread it out. Before you go back over that, clean off all that extra mud off the knife. What happens if you don't, you go ahead and spread that little bunch of mud and then you come back over and try to do something else, the mud thinks your putting a coat on not trying to smooth it out. It won't react and get smooth. It will just pull more out. If you clean the knife, then go over it, it pulls out all the little imperfections and stuff. It makes it smoother. So every time you hit that knife against something, hit your edge, clean your edge of your knife.