I added a nice, crisp white valance with a textured pattern that almost exactly matches the white Crate & Barrel shower curtain. But something was still missing.
Then I came across fabric roller shades at Country Curtains. I loved this white cutwork lace shade which I have nicely pictured here. It comes in ecru also. You can set them up with the cord or without.
I even bought this cute silver pineapple shade pull. Techincally, I don't need a shade pull, since I set mine up to use the pull cord to raise and lower, but I liked the addition of the shade pull. A pineapple is a traditional symbol of hospitality.