The problem with velcro is that the 'hook' side will be snagging any lace or delicate fabric it touches. What I would do is use snaps or buttons. You can add a strip of any fabric to one side of the seam, for the 'back' or underside of the fastening seam. Just make a facing, for one side, instead of folding it into the seam. This will extend it, so that a fastener can be attached and covered with the top part of the seam. I hope that makes sense.