The shower walls were not plumb, so laying the tile was going to be more difficult. We wanted to make sure that we lay the tile in such a way that it disguises the fact that the walls are not plumb. We measured the walls and planned out our tile to make sure that we ended up with whole or almost whole tiles in the corner.
We decided to use whole tiles at the bottom of the shower base because the shower base was almost level. The slightly uneven gap between the tile and the shower base would be filled in with caulk at the end.
Since this was a small shower and we didn't have a good place for recessed shelves for the soap and shampoo, we decided to install corner shelves. Recessed shelves were not possible, since one wall contained the plumbing and the other wall contained the pocket door. It seemed very challenging to install the corner porcelain corner shelves because they were so heavy; it seemed hard to believe that the mortar alone could hold them up. But it did, and when it dried they were very stable.