This was my first tiling job and I learned the hard way that you want to use organic mastic, not thinset on walls. When planing your pattern don't be afraid to mix things up. I didn't want a basic boring grid so by adding a row of diagonal tiles I was able to create an interesting architectural element. The outer perimeter was done using bull nose tiles. This style of tile was the "tuscan bone" porcelain tile available from Lowes. Leave enough space between the last row of tiles and the shower base for a line of caulk.