This tutorial tell you to make a origami vase. 

1.First we need a square paper.

2 Make the paper like below.

3.Fold the angle up.

4.Fold both side angle to then center

5.Than open it and fold inward.

6.The reverse side do the same thing.

7.Seen from above is like this

8.Fold the other  angle inward,then the paper like this.

9.Fold top angle to the center.

10.Open the angle than you fold last step.

11.Fold inward.

11.Strut inward internal of the paper.

Now you will get a origami vase