I did this about two years ago. I had a friend ask about it and so I snapped a picture. My girls bathroom is really cottage/spring like. I could never find shower curtain rings or even a curtain that I like that had all of the colors that I wanted. So I ended up purchasing a plain cream curtain. I hummed and hawed over what to do for quite a while. One day while in one of my favorite craft stores, I found the fabric for the tabs. I already had the fabric for the swash on the bottom and it just fit. Voila! The shower curtain of my dreams!
And the rug goes so well! ;)