Shortening a scalloped hem lace dress.
Hi, I am shortening a dress that has a scalloped lace hem. I do not want to ruin the hem as it looks lovely. But the dress is too long. I have hemmed the lining with no problem, but now I am trying to pin the lace up at the waist and then sew (hand or machine?) it so it lies as a fold under the waist. I do not want to take the waistline off this dress as it is not mine. Any help would be greatly appreciated. I have been trying to pin up the wrong side of the lace fabric by the waistline. It is so slippery and soft I feel like I am getting nowhere! Thank you so much for your time!