I have just been wondering if you guys place the tip of your tongue on the tip of your front teeth or behind them, when pronouncing the th sound. In other words, can the tip of your tongue be seen by another person (or when you are standing in front of a mirror) when you pronounce th? Does it stick out basically?
I am asking this, as I have seen either way claimed to the right one. So which one to go for? Where exactly do you put your tongue tip? Thx