答案：Dear Sir or Madam,
I'm Li Hua from Class 1, Grade 9 at Sunshine Middle School. I am writing to apply to join the Drama Club because I have a deep love for watching dramas and am eager to be part of your interesting, creative, and lively group.
I possess several qualities suitable for the club. Firstly, I am creative. Last year, I wrote a short play for our class party, which was well-received by teachers and students. Secondly, I am cooperative. I often work with classmates on group projects and always listen to others' ideas, like when we prepared a school play and successfully coordinated everyone's roles. Thirdly, I am confident. I once hosted the school English speech contest and wasn't afraid to speak in front of the whole school.
I am good at acting and singing. I have taken acting classes for two years and won the first prize in the school singing competition last term. If I join the club, I will actively participate in rehearsals, share creative ideas, and help organize drama activities to make our club more vibrant.
I am looking forward to your reply.
Yours sincerely,
Li Hua
解析：这封自荐信涵盖了所有招募要点。开头表明加入意愿和对社团的喜爱。品质方面，通过具体事例阐述了创造力（写短剧）、合作精神（准备学校戏剧）和自信（主持演讲比赛）三点。说明了擅长表演和唱歌及相关经历。最后提及加入后的打算，如积极参与排练、分享想法、组织活动等。语句通顺，意思连贯，词数符合要求。