First of all, very good starts there! Congrats! I’ll be asking you questions when I actually get into rendering and such.
Now for some suggestions/ critiques:
There are some proportion problems with your models. Now before I go on, I need to ask what the goal of this clip is. Is it supposed to be realistic, or animation/cartoonish. Either way, being consistent will be key to creating a convincing illusion.
So, without further ado…
The window is either very very small, or the frame is much much too thick, if you are going for realism. If you want to exagerate things, then you are on the right track, but you will need to be sure to do so with all of your project: consistency!
Here is something to help with the visual:
The edges of the desk are not all the same width and there are some things that do not make very good sense, imo.
Here is what I mean:
One thing that you could do to balance the left side of your desk is to remodel that side to have more narrow drawers and have an open sliding shelf/drawer for a printer (what are those shelves called?). Just a suggestion.
I hope these things help. What you have there is looking great, keep it up!
I like the waste basket!