Agree with all the comments. People who call themselves tilers who take good money from customers should be named and shamed. Good tilers cost good money. Setting out is so important as is knowing if you have a black grout as the grout lines will take no prisoners. Tiling is about care, technique, experience and knowledge. And having an interest in the art and continuing to learn.
Anybody can tile. But proper professionals tile better than customers can imagine. We exceed expectations. Good tiling is a joy to look at - but not here.