I don’t cut my board down like he does because I crumb coat out to the board. I use the edge of the board as my guide when holding the bench scraper…so, don’t cut the board if you’ll be covering the cake in fondant. Use the board like on my upside down frosting technique! If your final coat is buttercream then you can do another thin coat to cover the board.
It’s a great video if you are a beginner and have questions as to building, stacking and crumb coating your cakes!! – and most importantly, it’s FREE!!