Writer PSA 3.0
You don't stitch up jagged holes/cuts in people. It will end up with dead space under the suture and/or infected. Also ragged the skin edges will die, the suture will tear through the dead tissue, and the wound will reopen. If you want a character to sew anything closed, they can suture ligate a blood vessel, which cannot be done by a 1.5 inch needle by hand. You can look up "suture ligation" on youtube if you want to write out the process.
You pack a roll of saline soaked gauze into the wound and cover it with a dry gauze, telfa or ABD dressing and tape. You can close it later, but that also means washing it out with more saline, cutting the dead tissue edges.
I've worked in surgery for 5 years, and have rarely completely closed a hole/knife wound/cut the first time. Everytime I read a story/watch a movie with someone fumbling a giant needle through a jagged ass hole/cut I yell "WHY?!"
Please stop giving me reasons to scream "Why?!"
Thank you