Looking good! Here some ideas:
You make it so the bottom is large enough to fit over everything with extra space...and then wear like a yellow skii mask or add stretchy fabric material to the bottom to hide the hole.
Or glue the entire thing with fabric flaps and close it at the back or front with velcro (that anyone can access)
The fabric will work as a "living hinge"
You'll still want extra gap and room to move.
Stuff like stockings + flywire mesh are commonly used for black visors, the angle and width of this head should give pretty good visiabilty....but as it's curver you might need a bit of structure through too. (Like on ancient diving helmets with the cage covering the glass, but on the inside)
Look at how plastic covid face shield bands (or buy one) to stop it wobbling.
Absolutely possibly and this should look cool.
You could use adaptive layer hieght for reducing layer times too.