[Dadibom]

I know some basic japanese, and I'd like to know if these sentences are correct:

The teacher of my school.
Sensei no watashi gokkou.

My japanese car.
Watashi no kuruma no nihon.

My dad is my teacher.
Watashi no chichi watachi no sensei desu.

That's just some sentences i came up with, the point is that i'd like to know if the words are in the right order and stuff like that.
// Dadibom