This is easy and fun . I use a heavy cardstock .
Print out two copies of the template .
This will make one 3D star.
Fold the tab under both of the stars. Crease the interior lines of the stars so that the arms of the star puff up.
Put glue on the flaps and glue the two stars together . Each flap should be glued to the inside of the other star.
Glue a short loop of string or yarn to one arm of the star. Then you can cover with wrapping paper , fabric glitter , etc .