So I'm new to props and replica creation and decided to start by taking items that I had and changing them to fit in the universe of a tabletop RPG that I'm working on. I've drawn up some early designs for armour and a few shields but I don't know how to actually do it all. I found a video that touched on a few steps but was so vague about them, not to mention skipping everything up to already having cut the foam to shape, that I'm super confused and more than a little overwhelmed. I guess the first place to start would be cutting poster board into the templates for the armour pieces? But how would I go about cutting them to fit my body type?