Really good job on this one, your details in the clothes looks really nice and really brings out the folds in the man's clothing. You have a really solid display of dimension in the figure overall, I feel like there could be a bit more value range between his pants jacket and shoes, maybe have the scarf overall darker or the coat darker than the pants just to mix him up a bit, but in doing that you would run the risk of losing some of the focus so the lack of variation works well stylistically.
I especially love the background, the way it is simply a silhouette of a city rather than doing a more detailed drawing. It pushes the homeless man forward a lot and frames him well as well as adding an unfeeling, ominous tone to the scene that really gets the message across.
The face of the man is a little wonky in some ways, but again stylistically it works pretty well. The actual documentation of this image could've been a bit better, the edges show a bit of what's behind the paper, but overall its still a very strong drawing. Great work.