As the owl outside rustled its feathers, the boy inside the large, quiet house shook violently in his bed. Sweat poured down his face as his eyes fluttered. Even if you looked at him you couldn't even begin to imagine what was going on inside [although you may want to bring more focus to the dream qualities, perhaps it would be a good idea to try describing what type of night it was. The season might be a prelude to what goes on within the dream. It was smart to indicate that it is night with the owl. Unnatural sleep?]
The boy, Kaleb, stood in the middle of a lake. Standing on top of its water with out the slightest effort. He stared down into the waters of the black lake with his deep brown-green eyes. [trust me on this one, lose the eye color thing. Visually, we’re supposed to be seeing the colors of the lakewater, so why are you focusing back to Kalab’s eyes?] At first you could only see the reflection of the sky that was in tormoil. [turmoil]
The sky was filled with black clouds that blocked out the light. They poured rain and flashed lightning yet the boy was not [neither] wet nor nervous. The black lake did not move [stir] either. Its waters did not lap the shore but sat still in its bed as heavy as a drowning soul. [personally, I believe this simile is kind of lacking. I know you’re trying to set up the mood with this simile, but there are things that work n its place: rusted anchor, unearthed stone—et cetera]
Yet the boy was not just staring in the water for no reason. He did not see the violent sky but saw a girl. A girl who's [whose] hair was brown and flowed down her shoulders. [you are free to use abstract nouns and descriptions of her movement to make us understand what she looks like, and that the narrative is infatuated with her—just directly saying what she looks like doesn’t work.] Her eyes were even deeper then Kaleb's. [isn’t the lake deeper than his eyes though?] The sucked in all light except there was a small twinkle of playfulness in them. It was in the center of her eyes and look unworldy [forgot the “l”] beautiful.