Composition The composition definitely meets the challenge as the tiles portray lovely rythmic lines.
Exposure:
Contrast & Color are good.
Suggestions for improvement:
Take a crop from the middle to do away with the white line at the bottom, and the edge of the roof. Neither of these enhance the image!
I don't think we get enough of the edge of the roof in the top right corner to add to the shot. I'd either go wider and show more of the roof edge to give it more context, or else crop it to just the shingles themselves, which have enough pattern and color variation to stand completely on their own. I think I'd prefer the latter. And that white stripe at the bottom of the shot has got to go, although I assume it's there accidentally. Great subject though. A 9 or 10 with a better crop. But I'll give you an 8 because I could stare at those patterns all day even so.
The upper right corner of this one really distracts the eye from a very nice representation of --rhythm--.Croping out the edge of the roof leaves an eye catching abstract.
there is a lot going on... plenty of rhythm here... I am wondering what the entire frame filled with tile might look like... not sure... a closer shot might make it more interesting