Gopro neck mount

I saw there is "Gopro neck mount" on the internet. Then I think why can't I make one? it's not very complexity.
By using this, you can mount Gopro near your head which give a first person view.

Need:
m5 nut
m5 skew for gopro.

Material:
ABS is the best, PETG is fine, PLA is ok,
Because ABS and PETG have better flexibility. And ABS can use sandpaper to make it smooth.