So to give you a sense of where I'm coming from, I'm an attorney who frequently speaks in front of large groups 200+ and I was a speech communications major in college (although I did debate rather than individual events).
Your speech has two "hooks", the magic trick and the "think of an art form." I'd start with "Think of the performing arts. Singing, dancing, acting even comedy. Nobody ever thinks of magic. That upsets me... because I'm a magician. Why am I a magician? Everyone asks me that... all the time. I've learned to tell them it is because of the money. I can take five dollar bills and turn them into $100 instantly... watch. But you want to know the truth... it was because of a girl."
My second comment is to conserve language. There is a lot of stuff in there that can be deleted without weakening the speech. My first target would be where you step out of the speech into something that is two colloquial. Speeches should be more formal than ordinary language but less formal than writing (academic writing... not the stuff you write in text messages). The phrase "flash back time" isn't necessary. You actually aren't having a flash back and neither is the audience. Don't insult your audience if they don't know who David Blaine is. Don't put in filler words like "anyways." Also, use shorter more direct sentences. When cutting language, THIS:
Flashback time! Imagine this, 11 year old boy, socially awkward, had not lost any of his baby fat yet. It’s a friday night and I am sitting alone (Cause I had no friends) watching television. I turned on a David Blaine magic special. Now if you don’t know who David Blaine is, come out of whatever rock you are hiding in. If you aren’t familiar with him, he’s a magician and stamina artist that does everything from mindreading to holding his breath for 18 minutes straight. Anyways, I was watching him perform an effect where had someone think of a close friend, and without saying a word, he revealed the name was burnt into his skin. Now I thought, “Wow. If I could do that, I could pick up any girl I wanted!”(Wink at nearest female). So I went online, and found out about the most attractive form of magic there is. Card tricks. No. No its not, but I thought it was at the time.
becomes THIS:
As an 11 year old boy, I was socially awkward. I know that is hard to believe. One Friday night, I was sitting alone... because I had no friends. I turned on the television and there was a David Blaine magic special. I didn't know it then, but David Blaine has done everything from street magic to mindreading, to holding his breath for 18 minutes straight. In the magic special, he performed an effect where had someone think of a close friend. Without saying a word, he revealed the woman's name was burned into the skin on his arm. I thought, “Wow. If I could do that, I could pick up any girl I wanted!”(Wink at nearest female). So I immediately went on the internet and discovered the most exciting form of magic there is: card tricks. OK, I might have been wrong about it being the most exciting, but at least it didn't involve burning a complete stranger's name into my arm.
And THIS:
Now most boys go through a “magic stage” where they are doing a few tricks, but they all grow out of it. That’s what my mom said at least, yet here I am. Six years later, still doing it. It’s fun to watch mother's disappointment increase the longer I do it!
becomes THIS:
Most boys go through a magic phase. At least, that is what my mom said. But I stuck with it. Six years later I'm still doing magic. My mother's insistence that I'll grow out of it just seems to increase the longer I do it.
The introduction has two focuses... how you began magic and the benefits of performing magic. It could work, but it is too long as written. You could try, "Magic didn't help me pick up my Seventh Grade crush, but it did give me the confidence to interact with people and to even give a speech like this." Alternatively, make the benefits a separate point rather than creativity.
I would do history first. Mention Robert-Houdin as the father of modern magic.
Do the effects of magic second. Mention Robert-Houdin's quote about actors not be jugglers but being actors playing the part of magicians. I wouldn't call the principles "disciplines." I'd call them principles or basic effects. Also, move restoration after levitation. You want to start with vanish, appear and transpose because those are the most readily understood.
Send me a message if you want further comments or to discuss further.