Origami Heart

I found a tutorial on YouTube for making a heart from a folded paper square.
Here's the process.

A square of paper

Fold lengthwise

Fold widthwise

Fold bottom edge to middle fold

Turn over. Make an airplane fold.

Turn over. Fold in the sides.

Fold top corners to center

Fold top point to bottom point
keeping the center portions 3-D

Open up and flatten out the centers

Tuck the upper point into the pocket of the lower point

Fold outer corners in

Fold down top points. Turn over.

Completed Heart

The video was very easy to follow. Take a look: