Question

Проверьте, пожалуйста, грамотность составленных предложений
I am really happy that you are entered to the university. You asked me about my plans after school. So. I'm going to join in economic university in Moscow. By the way, we will celebrate graduation party(выпускной) in a cafe after getting the certificate. We wiil sing and dance a waltz. In general, every girl wear two dresses. On the official part girls wear long dress and when they go for a walk, they have a short dress. So I bought two dresses and I am going to be with high-heeled shoes.

Answer 1

Когда идет описание одежды девушек, следует поставить будущее время "will wear", и дальше "will go for a walk". 

Answer 2

 в 3-тем приложении после So должна быть кома)