The video worked fine for me.

I agree with mdevries and jtknits--these are *not* cartridge pleats! They are just regular pleats. Let's not use incorrect terminology. As mdevries says, cartridge pleats are creating with two perfectly even rows of hand stitching and the stitches must line up exactly! Then they are gathered onto a band by hand stitching. The resulting appearance resembles a belt of cartridges--bullets, if you will--tiny little extremely regular and closely space pleats resembling a cartridge belt. The look is *very* distinctive. These pleats are not even remotely similar. Please don't mislead people this way!