I think the process is you first get a body mould of yourself via paper mache/ plaster of paris, then you pour mould to get a casting of yourself. The kicker is if your build changes much you are kind of hosed once you finish the suit. Also factor in some active cooling via a shirt. I made mention of some modifications that could help make the suit wearable for longer periods in my thread. If I get into costuming too much more, I will need to invest in a good cooling setup so I can make ultra realistic costumes.