I am a model, but I also pay and view male, and female cams too, and I find masks very sexy. It adds to the mystery to me, which then adds to the sexiness.
ETA; I wouldn't go so far as to say I have a mask fetish, but there are people who do. So if you go the mask route, it might be a good idea to make yourself known to them. So they can follow you, get shows with you etc. etc.
I met a few by posting clips in the mask fetish category on MV and C4S. But you can also probably find forums and Reddits for mask enthusiasts (to join), for extra marketing/ networking.