added a strap to help keep it in place just a nylon strap with Velcro.. how its fasten on the goggles its a loop that has Velcro on it that wraps around the goggles. the "chin" part also has Velcro on it which can adjust to the size that is need for different size of heads

added eyes and eyebrows..lol

I added pictures hopefully it works!!

Good idea.
I have the new Goggs and they sit on your head well enough but "sit" is the word not "Fit"

The Goggs, as you know, are not designed to be worn tight like a hat but balance the weight between the back of the band and you're cheekbones.
This works fine and is comfortable for me but I feel that if someone Bumped me they might move askew.
A little more stability would be good.
(Remembering that heads are infinitely variable in size/shape I think they are pretty good.)

Funny. Hope you have fun with it.