You have the right idea! Keep practicing with it. You can try changing the point of view by raising or lowering the horizon line for an additional challenge.

Good work overall! To keep the room consistently in one-point, the sink will also converge to the same point as the rest of the objects, as well as the side of the TV and cabinet being kept perfectly horizontal. With the TV as well, it's good that you remembered the rounded bevel of the TV glass screen as it adds believability to the scene, though it can be kept less thick to keep the perspective consistent. Keep going, you got this!

Awesome progress! You are clearly putting in the work by practicing a lot. Something to improve with these 1 point perspective boxes: the only diagonal lines are lines that are converging to the vanishing point. All other lines need to be fully horizontal (just as the horizon line) OR they are vertical (90 degrees rotated from horizon line). You have some of the boxes on the sides of the pages that seem to twist towards the middle. This will be the case in the next lessons on 2 point perspective. But during this 1 point perspective you don't really have a second vanishing point to converge those lines towards. I have attached examples of some of the lines that don't seem accurate for 1 point perspective. So in 1 point perspective draw all lines either: 1) Towards the vanishing point or 2) Straight horizontal or 3) Straight vertical