This will be the first time I have ever built the entire shower without some professional help (with the exception of the rough-in plumbing of course!) Just getting the floor in is a multi-step, multi-day process. It made me very happy that we used a cast iron shower base in the other bathroom!
So here is what the shower still in the framing stages. At this point the plumber had run the water lines in the wall and the drain in the floor. The shower is basically a 4 foot square with a corner cut off, a neo-angle shower. 
Then I formed the pre-slope sloping toward the drain at least 1/4 inch per foot. For my shower that meant that I wanted the border to be 3/4 inch higher than the bottom of the drain. The point of the preslope is to support the liner in a way that will guide water toward the drain. If everything works properly, water will never reach this part of the shower.
Next comes the liner. You run the liner edges at least six inches up each side with the only puncture being at the drain itself. Then you install your cement board over the liner. Don't screw too low or you will puncture the liner! The next layer of deck mud will stabilize the bottom of the cement board.At this point it is time to add the deck mud over the liner. The point of this layer of deck mud is to support the tile You want this layer to be thicker than the pre-slope, at least an inch or so. Despite how flimsy the sand mixture seems when you are applying it, it does dry rock hard. It took twice as much deck mud for this step so I used two bags of Sand and Topping Mix with a full bag of play sand.
The goal for the end result is that the outer edges of the pan be level all the way around. This way your tiles will not appear uneven. That means that some areas will end up with a steeper slope than others. In my case, the area nearest the shower entry will have the steepest slope.You can watch all the videos and read all the articles you like - they make this seem easy. However, I found this part to be very difficult. I could have spent hours on this trying to get the slope perfect and never achieved it. You have to pound the mud into place to get it to bind together. However, each pound moved the mud you already set so it was impossible to get things perfect. Here is how I ended up.
The next step was to build the curb. There are a number of ways to do this, but apparently it is not OK to use cement board because the screws will puncture the liner. Some people say to use a metal lath but that seemed difficult and not very square. I opted to buy a prefab curb kit at my tile store. Since my curb was under 30 inches I only needed one kit. This kit is basically a plastic form that creates a perfectly squared edge that fits right over your liner. The instructions tell you to pack it with portland cement and sand mixture. However, when I followed their recipe, I got a very sandy dry mud. I packed that in and felt like I needed a wetter outer layer to give a clean finish. I mixed up some thin set and plastered it along the outside. After a couple of days of curing it feels as solid as can be.
When I came back to tile the bed, it was solid to stand on, but it seemed like the surface would easily brush away. Apparently that is normal. I went ahead and set the floor mosaic tile using thin set over the mud bed. I was still worried because it was difficult to get the thin set to lie flat and not pull away from the bed. Once that cured though the tile seemed very stable, so I guess it is OK.

Here is the final floor with tile and grout. Now on to the wall tile.
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