I actually wrote this about a month and a half ago...It's the first part of a short story that serves as a prelude to a novel I plan on writing...

Three brothers sat on a beach, waiting to watch the sunset on a late autumn evening. Their parents weren't far off-they were waiting to watch the same sunset, just on a different part of the beach. The brothers shared a special bond, despite the fact that there was seven years between the youngest and the oldest, and so their parents often let the three do whatever they wanted, as long as they did it together. So they sat on the beach, waiting for the sunset.
The youngest sat on the far left. He was the most anxious to see the sunset-he was the one who loved the natural beauty of things-whereas his brothers had other interests. The eldest brother enjoyed machinery and manmade marvels, while the middle child was starting to obsess over what lay beyond the sky.
The youngest brother looked like a young version of his father-a lanky kid with a stick figure. The only place where he wasn't skin and bones was his gut, which stuck out just enough so that his belly was flat, but non-muscular. He had brown hair-not too light, not too dark. He never needed glasses, unlike the others in the family, as so his face was unhindered by them. He looked younger than he was, but this just reflected how immature he could often be. He looked at his watch, and said aloud "Only ten more minutes." The eldest looked at his watch and nodded confirmation, while the middle didn't even move. The youngest noted this.
"Middle Brother," he said, looking to his right to his brother sitting next to him, "what are you looking at?"
"The stars Little Brother, the stars," he replied. He looked to his right at his older brother and then to his left at his younger. He himself also looked like his father-just with darker hair, and a bit lighter. He didn't have the gut that his brothers had, and he had the darkest hair out of the family-a dirty brown that looked almost black. For just five years older than his brother, he looked quite a bit older, and was a bit too mature for his age. "Even though the sun hasn't set yet Little Brother," said Middle Brother, "you can still see the beauty that is the stars."
"Do you think there's life out there Middle Brother," asked Little Brother.
"Maybe...who knows. Imagine-there are nine planets in our solar system, counting Pluto. Our solar system may only have one planet with life, "he said, shifting his gaze back to the stars, "but imagine how many other solar systems there must be-each with their own planets and their own possibilities of life. It would be frightening to find out that we are alone in the universe, but even more frightening to find out that we aren't-that there are other species living in the same galaxy as us-or even closer...
"And," he said, looking back at Little Brother with a twinkle in his eye and a smirk on his face, "it would be even more frightening if, while we aren't alone in the universe, that we are the most advanced life forms-or are way behind. To think of how far we still have to go is one thing, but if we could tell how far ahead-or behind-we were, that would be another, right Big Brother?"
Big Brother looked to his left and growled. Then he raised his right eyebrow (and lowered his left) and smirked. Out of the brothers, Big Brother was the black sheep. He took after his mother more than his brothers did, and it showed. A light brown hair color was complimented by a large body. He was tall, which made him look like he weighed less than he actually did. He looked mature for seventeen, and could easily pass as an adult. He looked to the sky and sighed. "I suppose you have a point Middle Brother," he said, "but I think that we can't focus on where we must go without knowing how to get there. And besides...you worry Little Brother with this deep talk. You are going to give him nightmares about aliens and such..."
Little Brother leaned back and shot Big Brother a smug look from behind Middle Brother. "You give me too little credit," he said in a whiney voice. "I haven't had a real nightmare since I was 8-and that was over two years ago..." He sighed and leaned forward to his original position. He looked at the stars for a short moment, then back at the beach, then back at his watch. "Only another minute or two..."
"Big Brother, I have a question..." Little Brother said. Middle brother was the smartest of the three when dealing with book smarts, but for experience and tangible things, both Little and Middle Brother turned to Big Brother. "What would happen if people from other planets came here?"
"Well," Big Brother started, "I don't think we really have to worry. If they were hostile, they would destroy us before we even knew what hit us...and if they weren't, then we wouldn't have a problem, now would we?" He then realized why Little Brother had asked the question in the first place. "Don't worry about it. Middle Brother and I will always be here to protect you from the bad..."
"Promise?"
"Promise."
"Promise," said Middle Brother.
"Well then," said Little Brother, "I promise to protect you too...both of you."
"As do I," said Middle Brother.
"I promise to protect you too, Middle Brother. After all, If I didn't then it would just be me and Little Brother-and that would be no fun...now would it"
"Har har har...very funny..." said Middle Brother. The sunset had started, and Middle Brother pointed to it and said "Lets all promise on that sunset-No, on the sun itself, that the three of us will always be there for each other-no matter what!"
"Promise," said Big Brother.
"Promise!" said Little Brother.
They looked at each other and then stared back at the beautiful sunset for a few more minutes. "It's great," said Big Brother, "that the sun decided to honor Mom and Dad's anniversary with such a beautiful sight."
"Agreed," said Little Brother.
"Indubitably," said Middle Brother, and they all cracked up and started rolling on the sand with uncontrollable laughter.

Please tell me what you think of it, if you wouldn't mind...