Burning in the corners

Vignettes can emphasize your subject. Here’s an image that could benefit from some contrast, since it is largely comprised of gray tonalities. At the same time, it’s hard to know where to look. Is the subject the teapot on the stove? Is it the tree? I would like to make the tree outside the window my subject, so I can lead your eye to the middle of the frame with this simple conventional photographic device called the vignette. Watch this video to understand how it can be useful.