Take a square sheet of paper and fold it in half.
Now, open the paper and fold it in the other direction.
Open and fold each corner toward the center.
Once you have this form, fold one side to the center.
Be sure to align the sides carefully.
Do the same on the other side.
Open all of the folds to get this form.
Now, fold this part towards the middle in two, like this.
Hold the tip to keep it from moving.
Do the same thing on the other side.
Then, open the folds keeping the two small triangles flat.
Now we’re going to fold the end like this.
Fold the inward part like this on both sides.
Once you have this form, fold this part down.
And the triangle will end up in the right place.
Repeat this process on the other side.
If you want the base to stick together better, you can always add some glue.