Re: Shorten / hem a special hakama: opinions.
Yeah, standard fold it twice and machine stitched hem. I recommend you ask them to do a wide hem if possible (as opposed to cutting off as much fabric as possible in order to do a very narrow hem) as it will hang better w/ a wider hem. I don't mean a 7" foldover. But 3" would definitely be preferable to 1/2" or 1".