How to make an origami cornetto

Get a sheet of square paper with the patterned paper facing down.

Fold it in half triangular ways

Fold each side up to make a dimond

Fold the inside edge to the outside edge and crease then put it back to how it was before. Do the same on the other side.

Then fold both sides to make an x

Then where the slits are in front and behind the x fold one side of the x into it. Do the same on the other side

There you have it

Here's an idea of things to do with them!