Step 5: Staple the fold
Mark a suitably dotted line about 6 mm (1/4") to the left of the coin pocket (picture 1). This will be our fold. Fold over and staple. Make sure you're folding straight!
It should look something like the third image. If the fold is too close to the coin pocket, it will be hard to get one out. If the gap is too large, smaller coins may fall out.
Lay it back down, like the fourth picture.