: Glue each end of your folded strip to the inside faces of your end caps. Hold them firmly until the glue sets.

: Use a contrasting color for the folds to make the "expansion" effect more striking.

: Use the heavier paper to create two small boxes or flat panels. These represent the treble and bass sides of the instrument.

Follow these steps to create a functional (though silent) paper accordion:

: If you want a more realistic look, use metallic markers or foil paper for the grill and trim.