假定你是李华，计划寒假找份兼职工作。下面的招聘广引起了你的注意，请根据要点（箭头所指内容）写一封申请信。

注意：
1. 词数100左右；
2. 可适当增加细节使行文连贯；
3. 开头已经给出，不计入总词数。
Dear Mr. Smith,
I’ve read your advertisement for an assistant teacher for a children’s winter camp.
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Yours,
Li Hua