OK, homies. The next thing I did to the muslin was add a buttonhole, and it was so easy, it was practically a nonevent.

BUT: Before I added the buttonhole, I lopped off 1 3/4 inches off the waistband tab because it was too long and flopping around in the back.
I definitely do not endorse the way in which I trimmed the excess length. I measured, made a mark, and cut it off with a scissors without finishing the edge. But that’s what test garments are for, right?
I tested the buttonhole foot on scrap fabric before I made the hole in the muslin waistband. This was important because a sewist needs to know whether her buttonhole will be stitched from front to back or from back to front. It’s all about placement.

So I tested, measured how long the buttonhole was, and marked the desired buttonhole on the muslin’s waistband. Then I stitched the buttonhole. Or rather, my sewing machine did it for me. I was the pilot.
The automatic buttonhole feature is slick. If you don’t have the feature, you can make buttonholes with a tight zig-zag stitch. (Peep these directions.) Steady hands, eyes required, though.

Next in this series: You’ve waited long enough! I’ll show you hemming and the finished muslin! Thanks for sticking with me; you rock the party.