The final result would have been a little less lumpy of we had used a matching thread only for those broken threads that would be made into new loops. The broken threads that were just stabilized by knotting and finishing off could have been attached to a much finer thread. Because we weren't sure at first which would be which, it might work better to attach all broken threads to a very fine thread at first, and change that to a heavier thread when it is clear that they will become loops.