I would hope that published novelists would have a higher standard.

But anyways, there are a lot of ways to describe facial features.

The nose is a pretty good starting point. Big/small/wide/narrow/long. Turned up is another common one.

Eyes are often described as large/small/wide/narrow. And behavior, darting around or dead, for example. And emotions: kind/sad.

Large mouth, small mouth. Tooth color. Hygiene. Does it hang open? Do they work their jaw a lot? And some people’s mouths look like they want to smile or frown easily.

I’m actually fond of the less specific ways of describing a face. She has intelligent eyes and severe features, for example. The reader both has a good idea of what kind of face it is, but still leaves a lot of room for imagination.

These are just my thoughts. I am not a published writer.