Hannibal's room

A sudden cold spreads across Hannibal Moxy's faces. He rises in surprise. His eyes a wide and anxious. He sucks in breathes of air and his heart thumps a 100 beats a minute. He lifts ahand to wipe the water from his face and casts a few quick glances over his surroundings. To his right is John Forbush, an old friend from school.
Hannibal spits a few bits of water out of his mouth, and asks, "Jesus, John. What'd you do that for?"
John Forbush grabs a chair, and sits down, placing the empty water jug on a night stand next to Hannibal's bed. John replies, "Asking nicely wasn't working."
John takes a sweepign look across the room. Littered around the floor are diagrams of circles and mathematical equations about them. He can barely understand them all but is troubled by what he sees. John asks, "Hannibal, what have you been doing all this time?"
Hannibal rises off the bed and stretches. He is not sure how long he has been asleep but he can feel the suns rays beating through the windows. He reckons it must be 10 or 11 in the morning. "Damon left me here after school. Says the ambient magic in the area can keep me powered for how ever long I need it. The circles are my pet project."

God I feel like I can do so much more with this. I just wanted to ge tsomethign on paper so I can mull it over and really work on it in the future. IDK if I want to keep his name John Forbush, but I needed a placeholder. I need more detailed setting information. I've been reading about voice and person, too recently, and how if I use third person, I should always keep it trained on one person at least for the chapter, and not use it to examine whats going through another character's head. I know i've used the 3rd person to talk abotu Hannibal and John's feelings in this brief write up.