Rotate Mario's head with the arrow keys.
You can't stretch Mario's face, unfortunately.
Obvious thanks to Nintendo for Super Mario 64, and
@K9shyguy for the excellent 3D engine. Thanks to alecpike from The Models Resource for ripping Mario's head, and thanks to Booscaster and teh_supar_hacker from the Spriter's Resource for ripping the title screen. GilvaSunner ripped the title screen music.
so, in other words, I did nothing (-_-)