loek (jongen) legt iets uit aan een lege kamer

A boy named Loek is explaining something to an empty room. Translate that into a vivid and specific description: A young boy named Loek, with brown hair and a blue t-shirt, is standing in the middle of an empty room. The room has white walls and wooden flooring. He is enthusiastically explaining something, his hands are animated as if he is holding an invisible object, his brows furrowed in concentration. There are no furniture or objects in the room, but sunlight streams in from a bare window at the side of the room, casting long shadows on the floor.