this includes a template to fit onto the can with holes of different sizes, a holder to stop the instrument from rolling away and a beater to stick on the end of a biro to play the instrument. 

1. fit the template onto the can.

2. mark and cut 3 of the 4 sides in each hole in the template (this will make a tongue shape).

3. take of the template.

4. put a beater on each of the two biro pens.

5. place in holder and enjoy playing.

this instrument was based of the tongue drum usualy made of wood. the different "tongues" you have cut out are of different sizes so they make different notes when you play them.