Super easy and the video is wrong.. no matter what the two first two stripes are .. when you sew them together that is the width of the bottom strip. I think the video is off. I love tube quilting.. so beats all the measure and measure twice when you can get.. what two squares off a measure once? OH Heck yeah!! and you can make so many varients of the same cut.. so go the search and check others posts.. see all that can be done from a simple cut on a simple seam.. magic..