Color or paint the shape if you want (and let the paint dry). With your
hole punch, punch holes all around the edges of the cardboard shape, spaced
about 1/2" apart.
Cut a long length of yarn. Wrap a piece of scotch tape around one end
so it looks like the end of a shoestring. Tie a fat knot in the other
end.
Poke the yarn UP through the holes and pull it all the way out until
the knot catches on the back side of the cardboard shape. Wrap the yarn
around the edge of the cardboard shape and poke UP through the next hole.
Keep going till you have the whole shape "sewn".
