Hi Sasa,
I have to say I rather enjoy this image. You get the sense that it has been a long tiring day for this busker… it is hot and the day is not yet over. The black and white treatment also looks fantastic.
Straight up I would say that there is not a lot I would do to change this image – with one exception.
In the windows behind this guy we can see the reflection of a car.
If I was making this image I would prefer to see the reflection of people walking past in those windows. As soon as you do this you can at least get the feeling that this guy had a potential audience.
Aside from that… not much more to grumble about! Good work!
Cheers, Anthony