Start with the booklet form you have printed.
Fold in half the short way.
Fold back one edge to the middle fold.
Fold back the other edge to the middle fold.
the sheet, fold lengthwise.
Refold the short way. Cut along the line marked in bold through
both layers of paper.
Refold lengthwise. Holding each end, push to the middle.
Push all the way in until the centers meet.
Fold the left edge over to create the cover.
Now you have made a small book.