I thought the same thing, but the tiles run at different angles, horizontally and diagonally. But of course the photo could have been taken at an angle.Ok question, on the bottom three is it gray tile, or is it the same tile from the top image, just desaturated?
Hmm now that you mention it, there are some blatant mistakes of desaturation in the final picture, you missed spots around the guitar and crossed edges on the walls and chick. Not good enough Deanis!
Other two pictures are fine.