ehh you can press tab and hold z then let go to catch a glimpsebut thats about it
go in console and do serverconnection.chasecam(999999);
You also need to be in third person for this to take effect
If you're an admin, you can press F8 or F7 to go in to that fly mode and then you can fly in front on yourself and yeh.
i doubt there'd be any way to look at your face in first person
a mirror, duh
Pfft, what is this, Blockland v20? Mirrors don't exist anymore!
I did this on my server but idk how to get it back on me
serverconnection.chasecam(0);