With the blade facing down towards you.

刀刃朝下对着你摆放。

So, the blade faces up, perfect, so you're holding with your thumb, your index is out, wrap and twist, and then, keeping the prongs down, they go into your mouth.

刀刃朝上，完美，用你的拇指握住，食指伸直，握住，翻转，保持叉子朝下，然后入口。