LMAO It's basic but effective. But not all of it's grey, Which is why it's effective. It's like making a certain aspect stand out. In this case it's the primary focus of the image, The phone box.
Not bad at all dude but I think if you added a bit of 3D effect depending with software you used if you used Photo you can make it stand out more by adding a 3D effect to it otherwise I love the Photographer artistic touch to it and feel of it great job I would actually rate if you don't me sir I would give it a 10.5/11 just the 3D effect and your good to go