Please criticize my writing :)?

Please read this and comment on my writing style, things I need to work on etc. This is the start of my 1st chapter, so is it a good way to start, what do you think about the little you read about the characters? Anything else? Please write what you think, thanks in advance :)

The summer sun shone brightly through the red dust, causing an eerie light to fall upon the crowd. As the dust slowly fell and settled on the ground, three lonesome barrels sat in the dirt. Beckoning for me to compete with them. Beneath me he stood agitated, raring to bound out and throw the dust back into the air. I gave him the signal. Five hundred kilos of muscle pounded into the ring, thundering towards the barrel on the left. As I sat atop him everything around me seemed to move in slow motion. The moment I wanted to last forever. We converged on the barrel, the power below me ebbing slightly to make the turn. Not even having to signal what to do as we had performed the course countless times. I heard music in the background, forcing it's way in louder and louder. I was torn from my dream and felt it disappear from my mind, gone within a second.

I rolled over and slapped my hand down on my alarm clock. 5:45 it read, just another day in paradise. I sighed and slid out of bed, going to ready for the day. I left for breakfast in gumboots and overalls. The morning sun was already warm and the trek from the shearer's quarters to the main house felt like it took 10 minutes. When I walked through the door two people were already seated. Finn, the owner's son and my Mum.

The farm I lived on was big, and there were 2 families living there plus my Mum and me. I put bacon and eggs on my plate and moved to the other end of the table than Mum, ignoring her, sitting opposite Finn. All the girls at school said Finn was cute, and I suppose he was. Tall, muscled, dirty blonde hair and freckles. Though I had never seen him in that way. He'd always just been a brother to me. Finn knew the other girls liked him, and he would play on it too. He would flirt with them and lead the girls on then put his arm around me when they were looking. He thought it was hilarious.

"Morning," I said as I picked up my fork.

He glanced at me, "morning," he grumbled going straight back to his eggs.

"A smile wouldn't hurt you know."

"It does on a Monday morning and you haven't studied for your maths test," he said.

"True." I said, and we ate in silence for a minute.

"Hey Brooke," He said starting to suck up to me, "want to do it for me?"

"Maths? Not a chance," I laughed, "but I'll give you my cheat sheet if you do my chores."

"Deal, what do you have this morning?"

"The pigs."

"Deal's off, I'll wing it." He said quickly.

I checked my watch, 6:10. "Fine" I said. I scoffed down the rest of the bacon and put my dishes away, "I'll see you at the bus?"

"Sure thing, don't be late, I haven't got a sexy story to tell the bus driver again."