GretaFantome

I'm a relative newbie. I'm still confused about files, configs, etc. I have a Maitreya Lara body that after some trial and error I have a look am reasonably happy with for my every day look. Now I want to try something more experimental for special occasions. This would be a new head, different skin applier, different shape settings. Everyday body is set up as BOM, experimental would be using Omega. My paralyzing fear is that I will make these changes and then not be able to restore back to my everyday look. Do I copy the body? HUD? etc. to a different folder? Rename them? How would I do this so that I can have two (or more) looks that share the same body?