I've only finished another two so far, a blue and a brown. I did these a little differently, and used fabric to cover them instead. I bought some remnants a while back, and used one to make a book cover. Sew-Fantastic on flickr told me that it was a Vera Bradley fabric. It turned out to be a misprinted 'seconds' of her Peacock fabric, but looking through flickr, I realised I'd bought at least 3 different Vera Bradley fabrics and my 2 favourite were perfect for lampshade covers.
Now I just have to find time to do the white felt piece for the last lamp shade :)