Some of your renders are really weird O_o' but I like the surrealistic feeling they have to them so for me it's a win. I'm not an expert in 3d art so I can tell you the "realistic" ones (the first 2 renders) need some improvement, but I can't tell you how except for the obvious stuff, like the carpet on the floor that looks like it's floating and the poles that also look like they're not going with the rest of the perspective in the room.
Anyway, if you go to school you'll sure learn how to fix this.