It's worst

It' worst!!!! That's mean very very worst about me. That's my teacher at AUA told me that my writing is worst. I don't like to hear that because my english is very important for me but It's ok to know that. I have to try to rewrite everything that I wrote. Maybe it's can make me better about writing. And about, speaking, listening, my teacher told me that's very good. How to write better? I want to write better than this. Help me please!!!!!!!!!!