First, I would recommend you to read more info and pick a color palette for the bathroom. You can do this by looking at different color schemes online or going to a paint store. Second, you should pick a tile design that will look good with your color palette. Tile designs are usually done in a few different styles, so you can pick one that best suits your needs and tastes. Third, after choosing the design and colors, you should get some samples of tiles and grout to see how they will look in person before purchasing them. Fourth, once you have chosen your tiles and grout, it is time to start laying them down.