Drawing the view through a window is a great way to learn about composition. The window becomes the frame of your drawing. Try standing at difference distances and angles from the window until the framed scene fits your taste.
Windows with panes offer an added advantage: a built-in grid that will help you get proportions right. Look closely at how much of the scene falls within the boundaries of each pane.
In the example above, your mind may trick you to think that, since you are drawing big skyscrapers, you should draw them large on the page. But in reality, the buildings appear very small in relation to the pane and even smaller if you measure them against the whole window.
The sketch shows the view from the 13th floor of Beacon Hill’s Pacific Tower. See more sketches from the historic building in my recent post: The beacon that graduated Amazon.