It works when you're young. Works post 20, too, but it takes a lot of time to see change. A lot. You should do it anyways because it's correct tongue posture.
>>42315571
My teeth are fucked up I know.
Am I doing it right?
http://sketchtoy.com/68237929
>>42315628
>http://sketchtoy.com/68237929
http://sketchtoy.com/68237993
>>42315872
>cringe