Serious how to mew properly?

[Hunter]

not sure if im doing it correctly, my tongue is on the roof of my mouth but i dont know how to reach the back third

 

[Robtical]

not sure if im doing it correctly, my tongue is on the roof of my mouth but i dont know how to reach the back third

I'm trying it too, it seems impossible but hopefully not.

 

[th62eathhts2]

Just get some hard gum.