reflection of my mock interview

I had job interview last wednesday.
It was nervous and I forgot what I was going to say.
In my jobinterview I have many problems.

I stammered a lot, I have to talk smoothly.
I was moving my upperbody sometimes. I think I have to practice basic posture.
I didn't use any gestures. Using gesture hepls the employees understand more easily.
My eyes didn't stay employee. When I think something to tell, my eyes were moving. I should practice it also.

I felt in order to get a job I have to prepare a lot, like information about company, license...