Tutorial-Diamond Fold Card

This is my first time to make a "Diamond Fold Card". I wrote down the steps.
Step 1:
30cm X 10cm paper (or 12inch X 4inch)
Step 2:
Bend the paper from the middle to make it looks like triangle.
Step 3:
Bend it to other side.
Step 4:
Bend it to four part as the picture.
Step 5:
Follow the line you bend, then the Diamond card finished.
P.s. My English isn't good enough to describe the steps. You can see the pictures to make it.