My older sister sewed something on the machine yrs ago, and managed to sew her fingers. That had to hurt. Back away from the machines!! I had sewing in HS, miserable teacher, didn't enjoy it at all.
I used to sew by hand for yrs, baby quilts, full size quilts, miniature quilts, curtains, etc for my doll house, embroidery, crewel work, Christmas items. I don't remember off hand sewing buttons on things. My DH used to sew buttons on his pants or shirts, learned that in the service, I didn't want to see him lose that skill!
I can't get my fingers to cooperate anymore, so sewing is off the table.
Sue, your napkins sound very pretty. I'm sure the person receiving them will love them.
God bless. Alice.