假如我是学生会成员,请用英语写一个通知全校同学本周星期六晚上七点半在学校礼堂举行一次英语晚会

多少字.?什么背景?是正式的还是比较亲近的那种? 我只能凑活draft一个了.
Dear schoolmates,
As we all know, an English environment evening party will be held by the student council every year so as to increase the students' interest in English learning as well as providing a platform for all the members of our school to communicate and interact. The theme for this year's party is 'Look into yourself'(举个例子) . This meaningful and exciting event will start at 7:30 pm on 7th of May (this Saturday) and the venue is the school assembly hall. Hope to see all of you there!
Kevin(还是一个例子.)
President(又是一个例子) of XXXX(学校名字) student council