YOU SAID:
Your mouth is far too big when you speak, it's like looking into a cave.
INTO JAPANESE
あなたが話すとき、あなたの口があまりに大きすぎて、洞窟に見ているようです。
BACK INTO ENGLISH
When you speak, your mouth is too large, is like looking into the cave.
You've done this before, haven't you.