It's always a mistake to think a person's facial expression reveals their thoughts accurately.

My partner has a narrow face with sharper features and deep set large blue eyes. If he's not smiling, he looks "hard". He has had to tell his children (when they were younger) not to mistaken his natural facial expression for how much he cares about them.

What compensates it, is his voice tends to be softer, gentler sounding than most men's voices. It's not a baritone/bass but more a tenor. Believe me, it's a very useful natural voice for a guy to have, especially when dealing with a broad range of people and cultures.

When he speaks, his voice timbre adds a lot of natural grace and cadence. And not surprisingly, he's had management jobs in his former career.

I know I tend to look too serious or even angry, when really I'm puzzled when I'm listening intently.