Mary Anne, Nico, thank you for your comments.
I'm not so sure about a tighter crop. I tried that when I was working with the picture but was not so happy with the result. I would like to preserve the stuff all those details on the table, which I think, are important. And when I cropped from left & top - the picture become unbalanced. Anyway, thank you for yoour suggestion, I will play a bit with this.
Konstantin