In this tutorial, we learn how to weigh the shoulder and attach the arm on a reborn doll. First, gather all of your tools and then start to fill the shoulder of the doll. Do this by filling 1/3 of the top of the shoulder joint with poly fill. Next, fill the middle with poly pellets and leave room for more poly fill fiber. Once you have done this, place small amount of poly fiber fill over the pellets. Don't over-fill the arm. Then, attach the arms to the boxy and tighten it up with the fluff pushed in. When finished, repeat this process for all the parts of the body and you're finished.