Well you have achieved the centered composition but for me this image has no real interest. Finding an interesting subject is not always easy but you need to give the viewer something that really draws the eye in :o)
How weird is that! Another picture that i think could have been greatly enhanced by Contrast/Brightness twizzles and some colour saturation. Maybe even a tighter crop...?
that is very cool - love how the ice melted away from the post. The sky and lighting just seem a bit off. The sky shows some strange lines in it running almost horizontal.