Rule #1 of camming is to only do what you are comfortable with. A LOT of models are non-nude, or get nude but don't do cumshows, or do cumshows without penetration. All of these are options for you. You can choose to tell viewers you're a virgin or not, it's up to you. To be honest, I would consider that to fall under the "none of their damn business" heading, like where you live, if you're dating someone, and what your vanilla job is, if you have one.
If you're not sure if being a cam model is for you, the best thing to do is to watch a lot of different models and see what they do. Watch their public shows, buy tokens and join groups and privates if you can, and observe how different models handle their shows. Determine what is in your comfort zone, and create your image around that. Err on the side of being too conservative to start with, as it seems to be easier to transition to showing more than it is to transition to showing less.