I have not made a shower curtain, but sister-in-law did and it was a beautiful statement when entering the bathroom. She made it just like a regular quilt minus the batting. I don't recall which method she used to hang it but she did have the traditional shower curtain rings. Maybe a reinforced top edge with button holes. (Just guessing.) She passed away 20+ years ago and I do not know who in the family got the shower curtain.
I have seen quilted shower curtain tutorials online.