the first presentation

why I was so nervous in today'presentation.

....background

I rehearsed the self introduction yesterday at the Clock Time Tower and made some recordings.

I thought that it's perfect.

....performance

today everything is different.

I was so nervous that my legs were weak. it was my first time to be nervous to death.

Is it  because I haven't spoken in public for so long or only the first one to make presentation?

Maybe I need to practice in the physical environment such as classroom where I stand in the platform.

Or

I need to practice in front of the mirror and make pose as well rehearse in big space.

Be sure to record a live video.

Only get three chances.

the first presentation