A latex life cast would be the thing for you. But you'd definitely have to put nostril holes and eye-holes. Small pinholes could be enough to see through, but it depends on how close to your face the mask sits. There are all sorts of tutorials for lifecasting things like bald caps or partial face masks for scars and burns, even ears. You can look them up to find one that works best for you, but here's one to start with.
The gist is that you take a mould of whatever part you need covered. For your face, you'd be stuck with the cast on your face for quite some time. You'd have your eyes closed and straws in your nostrils so you could breathe. This is the part that turns most people off, and for good reason.