I am far from an old-timer here, but have found that I do a lot of my shaving by feel. I am talking here about when the blade disappears behind my jaw, and when it is behind my hand while starting at the lower end of my sideburns. The most important thing I do is go slow, and pay attention. Did I mention that you need to pay attention? No, really, inattention = blood and possible scars... Don't ask for my qualifications, please.
Good Luck and Best Regards, Ken.