I used to dream of tiny delicate rolled hems and despair over my inability to make a rolled hem foot work on anything but straight edged pieces of sturdy cotton. I was somewhat consoled when, while at work for an opera company, I learned of the "rolled hem" capability of some sergers. Still, I didn't have one of those so the despair continued...
I moved to Arizona and got a job in a bridal shop working for the best seamstress I've ever laid eyes on. (and I've seen a few) I started as a basic dress wrangler, Suzi doesn't let just anybody take needle to her gowns. After a few months though, I wasn't just anybody anymore and in the heat of bridal season even the best need extra hands. Hands that can execute a killer hem.
And that is how this dream came true for me.
Now, I'll share it with you.
Start by folding the edge of your fabric, just once, about a quarter of an inch. Don't bother pressing that fold, it will slow you down and make things harder. Just fold as you go along.
Put it on your machine and stitch as close to the fold as you can get without running off the edge. That will be about one sixteenth of an inch.
Fold your hem in one more time. Your previous seam should be just to the inside of the fold. Keep-a-goin' till you get back to the starting point,
The fabric I was working with here was stretch chameuse cut in a circle. You can bet there were ripples going on when I finished sewing. They didn't stick around though.