Draw lines on the cardboard (just like we show you here).
Cut the cardboard on the thick black lines. Then, fold the cardboard on the thin dashed lines. Glue the short sides to the inside and then glue the long sides. Be careful: the triangles have to be on the outside.
Make two holes in each side of the bag and keep some distance to the top (about 1.5cm). Put the string through the holes and make a knot.
Cut out hearts and flowers from colored paper and glue them to the bag. Be creative!
Now, you can use Glitter to decorate your bag.
FUN FACT
Henkel invented the glue stick in 1969 after studying, believe it or not, lipstick! That's why you now have the convenience of glue in an easy to use, twist open tube!
