写作思路：确立中心，围绕选材，确定重点，安排详略，选材时要注意紧紧围绕文章的中心思想，选择真实可信，新鲜有趣的材料，以使文章中心思想鲜明深刻地表现出来。具体如下：

I'am much taller now. When I was a kid I was short and I had a large build. Now I have a medium build. My hair is much shorter now because I like short hair very much. I become stronger and stronger because I like doing more sports than the past.

我得更高了。当我还是个孩子的时候，我头发很短，我有一个大的改变。现在我有一个中等身材。我的头发短得多，因为我喜欢短头发。我变得越来越坚强，因为我喜欢做更多的运动而不是过去。