I’m not a lover of twin needle work on jersey. Never seemed to get a good result.
I prefer a 3 step zig zag to a normal zig zag. It’s wide enough to make the hem lie flat and doesn’t give the problems that a plain one often does. That’s a nice finish
@Ouryve. Not used that before.
I used to use a feather stitch and also a Greek key stitch. Either of those works because they go back and forth building in elasticity. But they take time.
Nowadays I have a cover stitch machine. I sometimes like to sew it upside down. It’s a nice look but is also so easy to get right to the edge of the hem!