tI made a bunch of coordinating crib sheets for my twin granddaughters. The high quality fabric has lasted for 3 years so far and is still going strong (they are late at getting out of their cribs). The only change I make from the tutorial is to use a serger instead of the french seams (though I may try those next time). With the smaller seam, I cut the corners as 9" instead of 8". I also use the serger to apply the elastic instead of using a casing. Much, much faster! I have a Bernina serger and it works great with the "Elasticator" foot. I tried using a Brother serger and elastic application foot one time, but it was not nearly as effective. I can make a sheet in about 20 minutes from ironed fabric.
Pam