I think that you've got a good understanding of all the things covered in term 1. There were a few things in the room that I noticed so I did a quick draw over.
For the initial box for the room, there aren't any issues but it looks like your vanishing point moved around a bit. The angles on the windows and desk are too sharp for how the room is set up, and the area where the desk and bed touch the floor should be horizontal. The windows on the right looked like they where different sizes.
A couple of things you can do to avoid those issues in the future is when you establish your VP and horizon is to draw a grid using that VP. Doing that before you actually start drawing will set up some handy guidelines so you can see if a line is accurate much sooner, even if you're working freehand. Use the corner to corner method to measure out spaces for stuff like the windows, it's one of those things that eventually will just be second nature. And finally, with one-point perspective all the vertical lines are 100% vertical and the horizontal lines are 100% horizontal.
Okay sorry if that was a bit long and seemed a bit nitpicky, but perspective is both super important and one of the hardest things to learn in art. Your other stuff looks good so keep up the hard work! 
