I want to work on making another cosplay costume, but I want to mold and cast my body parts first. Should I mold and cast my whole body at once or do one body part at a time? I would really appreciate all the help I can get. What materials should I use? Where can I get them? I don't want to have to spend a fortune on this. If you know any cheaper and easier ways of doing molding and casting please share with me.