Maid Marian is the love interest of Robin Hood, the outlaw who robbed from the rich and gave to the poor in English folklore. The classic tale has been made into a number of TV shows and movies, which see Marian dress in a number of costumes, including a corseted medieval dress, a jaunty, skimpy green outfit and a flowing gown and headdress. The latter is very easy to make and you can add your own little touches too.
Cut two triangles out of the cardboard -- make them 10 cm (4 inches) in height. Use the pencil to draw a line across the bottom of one triangle, 12 mm (1/2 inch) above the bottom. Firmly fold along this line, so the card can stand up with the 12 mm (1/2 inch) as its base. Repeat with the other triangle.
With the card standing up, glue along the top side of the 12 mm (1/2 inch) base. Stick this glued edge to the underside of the plastic headband. Position it where the left ear would be on a fancy-dress cat's-ears headband. Repeat with the second triangle and stick it where the right ear would be.
Put on the dress, shoes and headband. Place the sheet over your head, so it is resting on the headband and the front edge touches the top of your forehead. Drape the sheet so it sits on your shoulders, then falls down your back.
Use strong card for the triangles, so they can support the weight of the sheet. If you have a fancy-dress cat's-ears headband, this will work even better. Use pale pink, yellow, green or lilac instead of blue if you wish. You can add silver jewelery and ribbons or flowers in your hair for a pretty touch. Braid small half-inch sections of the front of your hair to add to the look.