2. Be careful with undermount tub installations. Rarely do I see the undermount tub installed correctly. You really need to look closely, but in this picture you can see how the tile in the corners is cut at a 45-degree angle. This creates a picture-frame effect and allows the water that lands on the edges of this tub deck to drain back to the tub.
This is an excellent example of smart planning. Knowing this is required will help you pick tiles that look good when they're mitered.