Thu gọn lời phát biểu. Sử dụng các câu đơn giản và ngắn gọn. Thực hành lời phát biểu. Học thuộc lòng lời giới thiệu.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
Some career service advisors recommend keeping your self-introductory speech as short as two or three sentences. Others suggest aiming for five to seven minutes in length. If it is not possible to make your speech this short, or if time permits you to give a longer introduction, you should still trim down your speech to be as concise, yet informative, as possible.  Make sure that if this is an assignment, you stay within the assigned guidelines. If your speech is supposed to be 3-5 minutes, a 7-