I have many mistakes.

Last time I wrote a composition, but one of italki's teacher miss Leigh revised my composition and it had many mistakes.
Now I'm writing again, because there is a famouse quote in my country，“吃得苦中苦，方为人上人”（chi de ku zhong ku ,fang wei ren shang ren），it means if you want to be a famous person, you must work harder than the other people. So, maybe my English is so bad, I must spend more time learning, writing more compositions, and correcting my mistakes. Tomorrow will be more beautiful than today.
Thank you

Well done! I enjoyed reading it :)

I has have many mistakes

Last time, I wrate wrote a composition，but when one of italki's teacher miss Leigh (Ms. Leigh) revised my composition, it had many mistakes in there.
Now I'm writing again, because in my country has there is a famouse famous quote，“吃得苦中苦，方为人上人”（chi de ku zhong ku ,fang wei ren shang ren），it means if you want to be a famouse famous person ,you must work harder than the other people others. so, Maybe my English is so bad, so I must use more time for learning, write writing more composition, and change changing my false mistakes. Tomorrow will be more beautiful (or better) than today.
Thank you.

Good job! Keep practicing and don't give up.