Seriously overprocessed, odd looking partial desaturation, and indistinct as well, I'm afraid. I'm guessing this is a Whiterook entry. If it is, you might want to give some thought to changing your recognizable style!
The tilt definitely makes it look like the ball is rolling away. I'm not sure about the selective desaturation... it makes the plants look strange to me.
Good concept, however, the final image is suffering from noise/jpeg reduction. Also the selective desaturation has left patches on the tree trunk (right) and the building/bike rack (left)
Not particularly sharp, blown out highlights and washed out colours. Apart from the tilted crop/camera angle, there is nothing in the subject or scene that is tilted.
I think this could have been a great shot.
I find the tree distracting I'd like to be able to see where the marble would roll, but it looks heavy so I'll let you of for not moving it.
Shame about the noise.