1.Fix the tile trims by using 3 nails to made the tile trims parallel to the wall.(Note:At the mean time of fixing,leave some space for the wall corner and another needed space as the same height as ceramic tile to connect with tile trims.)
2.Spread the ceramic adhesive or cement on tile trims and then tiling,keep the round curved side of tile trims to connect close to the ceramic tile.
3.Keep the ceramic tile close to the tile trims when install another side of tile,to keep the connection between tile and tile trims smooth and no gap.
4.After finished the installation,clean the tile trims and the round curved side at the end.