Piero,
The alternating black/white lines create an annoying optical effect when one scrolls your website--it is really distracting.
I feel that a lot of the titles are overly "cute," and that they are not adding to the work, but rather detracting. The photographs are not light and cute, so why match them with often-trite titles?
Though the images generally show a unified style, I think you could stand to edit them a little tighter--some of the photos don't really seem up to the standards of others.
Just my thoughts.