This card was made from two cards -- one cut into vertical strips and one having horizontal slits. The outer strips of the first card are discarded, but they are left on the lower card to hold it together.

If you are making your own card, it's simplest to use blank card to start with and to put the images on after assembly. Unfortunately, printers don't take too kindly to being fed with woven paper, so if you want to print your images you'll probably have to work out which bits to put where first and print the bits in the right places on the two cards before cutting them up and weaving them together.

[Aside: Two cards have four faces, which gives plenty of room for four different images to be revealed.]

Next, you weave the strips into the slits.

That's it!

For the benefit of anyone trying to put back together a card that has fallen apart, your card should now look something like this on the back:

You should be able to manipulate it to show the following images as well.

You can make a woven card like this with different numbers of strips and slits and the distances between the slits don't even have to be the same.

Experiment!