whatever you do, do not use a giant needle on the sewing..and use small stiches, large ones tend to create a new line of tear...I gave a pair to a friend to sew (she needed money, I didn't like the job) I now have a pair of jeans with two patches...and tears along the top seam she made...not to helpful.
Next time I'll give her the loot and sew the jeans myself
