Preheat a hot glue gun.
Fold the pieces along the score lines of the rectangular shape next to the star cutouts towards the back (with wrong sides together).
Fold the score lines along the smaller tabs inwards (with wrong sides together) for all remaining score lines except for one (see step 20).
Next, fold the one smaller tab (along the bottom of the larger gift box piece) outwards (with right sides together).
Working one tab at a time and quickly since hot glue dries fast, apply a bead of glue along the tab adjacent to the star and press it in place tucking it behind the star.
Repeat with the other tab forming the box behind the star.
Glue the bottom tab in place securing the box shape in place.
Join the two pieces together by glueing the tabs from the larger piece to the smaller piece behind the star cutout.
Glue the tabs along on the side rectangular shapes together to complete the gift box.
Repeat these steps for making as many star gift boxes as needed.