Hello, could anyone please give me advice on how to shorten the front of a wedding dress. The dress is all lace and the edges are a scalloped lace. I worked out that I can unpick the scalloped lace off but I am not sure if I should just star from left to right side and literally lift the lace up and sew back on, is there anything I have missed? The back is a train and its fine but the front is about 4 cms too long. thank you so much in advance.