How do i improve my english as professor?

[Jabba]

First, stop using abbreviated texting spelling. Second, with a grammar book and dictionary in hand, start writing a long story-- such as a small novel or a memoir. Be determined to use the same tense through out, check your grammar often, and use a dictionary for every word you have any uncertainty about in spelling or definition. Don't use software spell-checkers except as a last resort. Don't rely on software to check your grammar, it's not always correct, and sometimes correct grammar is not always appropriate to the story you are telling. If you are writing in a second language, write short portions in your own first language, and then put that sheet of paper aside, and then write it again, without reference to your first, in your second language. Then check your tense, grammar and spelling. If you are studying English language, the best writer to study is Jane Austen, for form and grammar.