From paper to project
Measure the bag’s top width.
Cut a card that wide and 8 cm high.
Score and fold it at 4 cm.
Write the message before assembly.
Fold the bag mouth and place it between the two card halves.
Tape the outside and check the closure.
Check it with an example
A 12 cm-wide bag needs a 12 × 8 cm card. Each folded face measures 12 × 4 cm.
If it does not turn out as expected
Do not close unpackaged food with craft materials. Avoid staples that could fall among the contents.