Using a pencil, use a ruler to mark small dot with 1cm width.
Draw a line straight down from the 1cm mark with the ruler.
Cut off the line with scissors
It should look something like this
Make a small crease at the top of the paper
Make another fold on the other side to form a pentagon shape
Repeat step 6 on the other side
Keep folding until you reach the end
Tuck the end underneath a little gap to hold it's shape
Pinch the edges of the pentagon with your index finger and your thumb.