1 - Cut 2 bottoms of 2 soda aluminum bottles by a paper knife
2 - Chose one bottom use a sharp screw or a needle to make a small hole on the center.
3 - Bend the edge a little
4 - Take a pieces of cloth or towel and put it inside that bottom
5 - Put 2 halfs together, make some small hole in the center and around take a tip from a bottle
6 - Use alcohol 90 % and pour a little through center holes, and a litter around to make it easier to fire
7 - After it fire out through all outside holes, cover the tip above center holes
8 - See it