Header Graphic PNG added

hi am trying to make similar effect and i really like the way they show caused the slide show there slanting the walls .Its soo realistic and i tried to recreate it with my limited skills. Please see it give me your ideas

cheers
zoe

i think that shadows used in the main graphic is masking am not sure .Also i think they applied some noise over the shadows?? Any help will be appreciated .This is my effort.