In this 1920s tip from expert seamstress Ruth Wyeth Spears, you are provided full instructions for sewing a felt cloche, with the brim pattern piece included. Note the big bow effect in back. Do you have a third yard of felt handy?
If you want to sew it, click on the link to enlarge the image, and then print that image. You may need to adjust the overall length to fit your head measurements. I think I need to sew up this one!