You didn´t apply any perspective but that´s normal when you sketch. A lot of comic artist first sketch rooms without
thinking about perspective at all. An experienced artist recommended this to me. First sketch without and second
sketch with perspective.
The problem of your collab partner´s version are the multiple horizon lines. There can be multiple vanishing points but never
multiple horizon lines. First establish one horzion line (eye level) and then place the vanishing points.
The floor and carpet have a different eye level than the furniture. Floor/carpet are bird´s eye view while the
furniture doesn´t have bird´s eye view. The other objects like the doors also have a different horizon line, that´s
what makes it look wrong
