Therefore, we recommend you to take a piece of wall tile when buying the grout, as it will be much easier to decide the right color for your tastes and needs.
The grouting floats come in different shapes and sizes, but you don’t have to worry about this aspect.
Next, use a trowel to clean the adhesive between the tiles, as in the image.
From our own experience, we recommend you to work with great care and good judgement, as the tile edges are very easy to scratch or chip.
Start grouting the wall tiles, with the surface close to the ceiling.
Use the float to spread the grout in the spaces between the wall tiles.
Last but not least, use a good vacuum cleaner to remove the dust and the particles between the tiles.