It's definately centered, but it's not very interesting. The background seems speckeled, like noise or something. looks like this was taken with a point and shoot camera, which I can sympathize with. The focus seems a bit soft, but could be a lighting issue. The sky seems very dull as well. Wish there could have been some blue there, or some clouds. ~Heather~
This is a very cool shot. One does get the feeling that heavy thing could fall at any moment, so we have to keep watching the center. The only real thing that I could see hurting your score is the distracting tree in the lower left. I'm kind of ify with the amount of noise in the picture, there seems to be quite a bit but I have issues shooting into an overcast sky too. I may have cloned out the tree and used the remove dust filter (I use digital image pro - don't know what PS has for this) to clean it up a bit. Great Idea, very good picture.
Exceptionally sparse composition, though i think you could have afforded to brighten the whole thing to a greater extent: your sky is only mid-grey, and absolutely featureless - might have had more impact if you had taken this closer to a silhouettte. Perhaps what will most let your score down is that this is not really an image suited to a centred composition, you've just cropped it that way. 3
It meets the challenge, but has no real interest for me. The tree distracts. If the tree were removed, and the colors brightened/contrasted up a bit more, I think it might have more interest.
Very centered, but a bit on the dull side with the sky being all gray. Did you try other angles too, to bring in more/other subjects but with the headache sitll in center?
Yikes, stunning subject (no pun intended). Definately a photo that grabbed my attention. The rust and other details in the ball look way oversharpened, though.