>>532163349
The head is the most nuanced and complex object you can draw, your brain and biology is hard wired to spot any unappealing and poorly proportioned features which is why uncanny valley is a thing.
If you're using loomis I would suggest trying the box method or trying to draw heads without construction sometimes, focusing on one proportion rule like how the ear decides where the eyes and nose go.
I'm not good though, just chiming in because I'm at the beginner state too so I'm still learning this stuff.