I am tiling my shower surround and I have a platform that is approximately 1’x3’ that I need to tile as well. I am looking for layout suggestions on what area I should tile first and if the horizontal surface of the platform should overhang enough to be flush with the vertical surface?
I would go with your 2nd option. Columns E and F in the spread sheet. and i would use a bull nose edged tile. I. E. a tile that is designed to have the edge exposed. Other wise you will see the unfinished edge.
This is more aesthetically pleasing and will not put a grout line at the edge that would collect water and not let it flow over the edge of the tile.