Can someone look at my story?

A Lesson

People bantered. Hearts pounded. Hands trembled. The sense of pressured excitement pulsed in the air. “Attention,” announced the speaker. Several people continued to carry on their conversation. “Attention,” repeated the speaker. The pavilion grew silent. All eyes turned on to him. After a slight pause, he began his opening speech, “This is the 25th annual Mathcounts competition…”
Oblivious to his words, I gazed out of the tent absentmindedly. I focused on my goal: the State Countdown Round. Only the competitors who rank in the top ten in the state are allowed to participate, where the best compete on stage in an adrenaline filled round of 80 questions using a buzzer system. Having ranked seventeenth in sixth grade, I predicted I would easily nab it in seventh. In fact, I wouldn’t even have to try. I could feel myself slamming down on my buzzer at light speed, grinning at my opponents’ shocked faces, demolishing all opposition. Who knows? Maybe I myself could advance to the National Competition, and then…then…
“Raise your hand if you need scratch paper and pencil.” I shifted back to reality. The first round was about to start! I lunged for my pencil and tensed, like a rabbit with a hawk flying overhead. “Turn your papers over,” boomed the proctor, “and you may begin.”
I hastily fumbled with the sheets and turned to the first question: “John saw an ad for tomato soup at 24¢ per can. At the price advertised, what is the greatest number of whole cans of soup John could buy for $1.00?” Smirking, I scribbled down “4” and moved on to number 2.

“Testing, testing,” murmured the speaker, pushing down a buzzer.
Eeeernn!
Several hours after the first three rounds, I was seated in the auditorium, watching the display screen where the questions would be shown and the speaker checking the buzzers to see if they worked. It felt as if I was in the pilot’s seat of a space ship, anticipating the moment of liftoff during the countdown.
Eeeernn! He had hit the last buzzer.
The speaker stepped onto a podium.
“We would like to announce the top ten students who will participate in the Countdown Round,” stated the speaker “Will the following people please come up here…”
My breath froze.
“Sitan Chen from River Trail Middle School.”
“Qian Deng from Hilsman Middle School.”
“Alan Dong from River Trail Middle School.”
“Gil Goldshlager from Dickerson Middle School.”
My heart stopped. The first letter of my last name was “H.” I must the person to come next.
“Arvind Narayan from River Trail Middle School.”
The world came crashing down. There was no way this was possible. I hunched over into a fetal position, hoping that this was some kind of fluke.
“Edward Park from Dickerson Middle School.”
“Taylor Sands from Hightower Middle School.”
“Roger Song from Dickerson Middle School.”
“Jiyang Xie from Elkins Pointe Middle School.”
“Claus Zheng from Dickerson Middle School.”
Those were the ten.
Thorns of pain dug into my skin. The top ten walked up to the stage. Seeing them compete where I could have been made me feel as though one of them had slapped me on the face. I could barely turn to face my teammates sitting beside me, blankly repeating in my mind “What about me? What have I done wrong?”
After the competition was over, I approached Mr. Sandusky, who was my Mathcounts Coach, and anxiously inquired about my ranking. After shuffling through a stack of papers, he pulled out a sheet. I looked by my name. A 31st place squinted back at me. Disappointment rippled through me. The question “What have I done wrong?” echoed back into my mind.
“Are you sure nothing happened?” asked Mr. Sandusky, looking at me curiously.
“No.” I hoarsely replied.
“How was this possible? How could I have scored fourteen places less than last year?” I thought.
Then something dawned on me; I didn’t put in effort in studying. In the weeks before the competition, I had taken the odd practice round every few days and went to one meeting a week. In sixth grade at my old school, I completed at least one entire set every two days and had eight meetings a week. Even with only one meeting a week, I could have studied on my own to make up for the lost time. I realized my failure was planted at the beginning of the school year, where I thought I was stronger than I was in seventh grade. As time passed, my seeds soon took root and became my pride. By competition time, I had reaped what I had sown: arrogance.
This defeat has shown me one major lesson: nothing that is wonderful comes without hard work. This concept has led me to success already. During the summer before eighth grade, I took the SAT, where I scored a 2100. I hope it will do the same for this year’s Mathcounts competition.

You did a very good job. Kudos
I’ve only found 2 things and one questionable

Questionable…8th line "Only the…. I just don’t like this sentence.
It seem a bit run-on with to many topics in one sentence.

forgotten word…"I must be the person to come next." the word "be" is missing

change word…"Seeing them compete where I could…." Change "could" to "should". She really thought she SHOULD have been standing up there.