First you need to turn a soda can into a flat sheet of Aluminum.
Cutting cans creates very sharp edges, so proceed with care.Poke a hole near the top of the can with the point of the scissors and cut around just at the ridge.Then cut part way down the side of the can and finally cut off the bottom staying at the ridge.
Drow a circle with a marker.
Cut carefully the circle.Fold the aluminum circle in half.Open the fold.
Fold in half again making this fold perpendicular to the first fold.
Fold in half again making this fold in the middle to other two folds.Open the fold.
Fold , for the last time, in half again perpendicular to the last fold. Open the fold. You have created 8 peak folds.
Make a small crease between each fold with your thumb. Push the peak folds creating valleys.Cut into each valley in the middle .
Fold the little flaps in, towards the peak.
All the way around..
And here it is your star ready !