Once the walls were plumb it made tiling a lot easier. If things are out of plumb you can see it with the tile work when its finished because of the increase or decrease in your tile size up the wall. I made this mistake only once and it was too late as the tilers decided to tile that wall first. The builder that was working with me and I didn’t pick it up. The embarrassing thing was that the bathroom was published in Vogue magazine. I have included that article.
Rectified edge tiles were used on the floor and walls with a 1.5 mm gap. On timber floors always install a hob on the shower floor. When you are applying glue/adhesive always be generous, glue is cheap compared to repair costs.
The photos below show this including the hob gluing and waterproofing.