I think I get it....after looking at the picture for minute I noticed the spear looking shadow that seems to be about to stab the statue...similar to the pictures in The Omen movie.
I think what the op intended by "the omen" was the bird (crow? eitherway clearly photoshopped in there) in the right corner, standing on the statues head... nonetheless it doesn't do much for me, I think the shadows are pretty neat but the glowing cross puts me off, as does the bird....maybe if it weren't as obvious that it was photoshopped in there......