This is well balance and composed. I really enjoy the subtle textures in the background. I do wish there was a little more context in the photo as to what the marker is or even where it is. It feels as if its floating in space and just a little bit context (not enough to detract from the minimalism) would help provide an anchor and add interest to the photo. Overall I think its a strong image, with good contrast and framing.
Thanks for your comment, if I had added more content into the picture it would distract from what I was trying to achieve with this shot. The area around did not have anything of interest to enhance it. Thanks for taking the time to give your opinion.