Here is my self evaluation english is not my first language if anybody correct my gramitical mistakes?

Although the reader can understand your message you can improve on the word usage. When speaking English you need to condense your sentences. For example when you wrote "I could improve more", more isn't necessary because the word improve implies it. So it word read I still can improve. When you write age it is not necessary to put an s on the end of year, so she is a 13 year old. You have many sentences that don't flow, perhaps your trying to use words that are not commonly used in everyday conversations. Keep working on it, I'm sure you'll do fine, good luck.