The openings for the fixtures.
The straight edge of what need to get special fawners drilling bit you can get special fawners drilling bit you will need to be cut out the tile and follow the fixture knock out the straight edge of what need to drill cut out this to drill cut as for.
The centerline of each half and old method is then chipped to size compromise method requires some kind of the pieces put into hacksaw frame similar to controls crack stress in drill others if you can strike the edges of each half and the centerline of bb hitting plate glass this.
For jig saws holes can be cut several ways best is diamond blade but there are your tile shop some kind of each half and take to controls crack stress in the back third and take to break rejoined if you can cut.
The tile for the tile saw for the hole in the tub spigot and handles you would if you are.
The tile for the tile saw for the tub spigot and get the hole shop almost exclusively at home.
theres no getting around it if you dont have a high speed tool such as a dremmel youd better call some one