Tile accent pieces customize your shower and make it unique. There are no hard and fast rules about where to position them, but there are some heights that make your shower look the most appealing. The most flattering way to incorporate accent tiles in your shower is to position them at eye level, about ¾ of the way up the shower wall. This helps give the shower the illusion of additional height.
If you want a minimal way to add some style to your shower, consider using accent tiles at baseboard height, almost like trim in your house. You can also reverse this idea and put accent tiles on the top row of the shower tiles, which gives your shower a finished look but might make the height feel lower by drawing the eye downward.
A waist-level height is an excellent choice for shower accent tiles, especially if your bathroom already has wainscoting. Just be sure to consider your ceiling height when determining how high you want waist height to be. If your bathroom has grand ceilings and you position the accent tile at a low mid-height, it can look awkward.