Hi! I just recently got into Lego and I'm interested in MOCs. I saw the Ninjago Overlord Dragon and was inspired to turn it into a mech. I've watched some videos about making mech frames, arms, legs etc but I need help identifying parts to make joints so I can purchase them individually in bricklink. I'm actually interested in balljoints for the shoulders and hips and the smaller ones for the wrists and ankles. Also, what is the best to use to connect the head to the body? Finally, I wanted to convert the wings into swords. So what parts would be good for hilts?