|I added large seam allowances to my pants pattern to allow for alterations. I wanted to be able to see the original seam lines, grain lines, darts etc. . After cutting out the fabric I laid each piece, one at a time over top of the pattern. Because the fabric was so light colored, I could see all the markings and was able to trace them. I just have to remember to do the matching piece on the opposite side. If the markings are not dark enough when you trace the opposite side, you may have to redraw them on the back side of the pattern.