To dress up as Robin Hood for Halloween or a costume party you are attending, it is important to include everything in the costume, even the hat. Robin Hood's hat -- the famous green, pointy cap that he wears with the feather on the side -- is as important to the whole Robin Hood costume as any other accessory, and, luckily, it is not difficult to construct if you have the appropriate materials.
Cut a semicircle of green felt, approximately 24 inches in diameter.
Fold the semicircle in half so that it forms a smaller cone shape with a rounded bottom.
Sew the edges of the two straight sides together that you have folded over so that the cone shape stays in place.
Fold up the bottoms of the cone shape to the desired position to create the signature folds of the Robin Hood hat. Sew a few stitches in each fold to keep the material from falling back down.
Glue your feather to the side of the hat. Stick a very small amount of glue onto the stem of the feather and hold it tightly in place on the side of the hat for about 5 to10 minutes to secure it.