Please correct this :D

For me, speaking English fluently is my ultimate goal.
Maybe it is the reason I chose public speaking course.
The first speech I had to deliver was 'paper bag speech' of which the purpose was
to introduce myself to friends showing some things, pictures, or something to represent myself.

In fact, I hadn't prepared any script for my first speech because I thought it was not efficient to rack my brain to remember my script, which made my speech itself unnatural. So I decided to deliver a 'prompt' speech', after which I found wrong.

My speech was full of grammatic mistakes and totally untidy.

Unlike me, many other friends did very well. Some spoke English very well, 
like a native speaker and other conveyed their intententions. They made the audience
to pay attention them.

After listening to all of their speeches, I realized that good speech is not only
just saying thing. Making a calm environment and demonstrating accurate vocabulary
is the key to delivering a speech, making the audience gain a better understanding.
Also, the speed of pronouncing English is not that important.

I know that my English is more poor than any other friend in class. So I sometimes
feel frustrated when I can't understand their English jokes. But I am sure that
I can get over it as long as I don't give up. The only thing I can do now is to study English and develop a better way to speak in English for my speech.

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It was amazing. But make sure you pay attention to past tenses/future tenses! 

You work so hard! I hope I can learn Korean as well as you are learning English.