How do you properly open teeth smile?

[normie_joe]

I'm talking smiling like this

He looks so high trust and approachable

Meanwhile when I try to show my teeth and smile I look like this

 

[chadcel;]

His smile is relaxed and natural he is not trying to show his teeth, you can only really see his top teeth anyway.

The bottom photo is like something from a horror movie, looks like a very forced smile and almost uncanny.

I've been told I have a great smile and I think it's just because I only smile when that's my genuine emotion. People are very good at picking apart real and fake smiles so I think my "good smile" for example is simply because when people see me smile it is always a real smile and not like the abomination bottom picture

 

[Sapieeen]

Have a wide palate