I think it is just my eyes... I seriously doubt your tiling is going to be at fault here, especially with all the effort you have put in!The colours/patterns have been the hardest part to get right - we really had to cherry pick through all the packs to get the right balance. I wouldn't say any look uneven in real life, although it could just be my tiling?
I can just see one or two areas where the joins between tiles look a bit weird because of the colours and/or patterns that are adjacent to each other, but it is purely an optical effect. And weirdly, the more I look at the pictures, the more the floor grows on me. Looking forward to seeing the kitchen units in situ.
Underlay under tiles? Is that a thing?Would you not put an underlay under the floor?