You will need:
Thin orange card - I guess thick paper would work too
Green wool & a length of green ribbon
Hole punch, glue (I used Pritt stick), ruler, pencil and compass
Using the compass. mark two 1/4 circles in the corner of the card, one 14cm and one 13cm. I've done two here in the photo, one in each bottom corner.
Cut out along the outer line.
Mark 1.5cm in from the right hand side and cut a slither off the shape so it's a little less than a 1/4 circle now.