Egidija: Your photo,is more than just "roofs of Moscow".For me,it's a fantastic image,composed with quiet colours,and playing intelligently with lines and forms,conforming excellent composition. Cheers!. Gustavo.
Wonderful rooftops...the only thing that I might change is to rotate the image 1 - 2 degrees clockwise to straighten, then recrop...might also try to add just a hint more cintrast...Levels if you use PS...excellent image