How to teach a child English

I do not have the answer to that question, yet. However, I'm going to get a chance to learn. Basic English will be easy for me to teach. But, how do I hold the attention of the student? The length of the lesson will only be 10 minutes to start. This is only a learning experience for me. At this time, I don't teach English to children. In the future, this may change. I'm going to use pictures and my web-cam for this lesson. I hope the strength of my personality can save the day.