I think your dof and focus are fantastic here! What adds interest is the lines going toward the back getting narrower because of the perspective.
All those square tiles certainly meet the challenge, and the green adds a little something.
Generally I don't find the subject terribly interesting, being an ordinary subject, BUT I like when a photographer can take something ordinary and familiar and make something of it. You accomplished this!
The lighting catches my eye too. The overall color is subtle, and pleasing.
Regards,
I think that the way you set this picture up has made it into a very nice image. I think that the angle you used was also very nicely done. If you could have gotten a little more light in on the picture i think that it would have helped. Nice Work
Hmm, this doesn't seem visually appealing to me. The DOF is too short here. While the center is in focus the edges are drawing my eye from it. Sorry, 5