Figure 7-29.  Correct oversew. Figure 7-25.  Seam fold.  Figure 7-26.  Seam corner.  Figure 7-30.  Patch inspection. Figure 7-27.  Correct fold corner seam.  Figure 7-28.  Correct stitch gauge.  Figure 7-31.  If you pull up sharply on the top thread, the bottom  thread will form a loop allowing you to cut both at once and remove  the bottom thread through the fabric. 22. Inspect the work thoroughly. Hold over available light  source.  [Figure 7-30] 21. Always make a 4 to 6 inch oversew or turn the next  corner on a short legged patch.  [Figure 7-29] NOTE:  If you pull up sharply on the top thread, the bottom  thread forms a loop allowing you to cut both at once and  remove the bottom thread through the fabric.  [Figure 7-31] NOTE:  Wear the damaged parachute as if it were a mitten  while cutting and you will not cut the patch that was just  carefully placed.  [Figure 7-32] 7-20