Essay topic: Tell them why you chose their school. What do they have that you feel you will benefit from, both academically and personally? How are they different from other schools? What kind of programs do they have? How can you contribute to those programs (e.g., the school's website)?
4) I would like to be better at: ...
I would like to be better at learning foreign languages so that I could be able to communicate with people all over the world.
Is there something else that you feel you need to improve, say, writing or math, or so on? If so, why do you feel you need to improve and how can the school help you do that?
The rest of the application looks good.